Home / 10,429,427.80-15,644,141.70-9,421,658.20

Finding the Fourth Proportional to 10,429,427.80, 15,644,141.70 and 9,421,658.20

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Solution

The fourth proportional to 10,429,427.80, 15,644,141.70 and 9,421,658.20 is: 14,132,487.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,429,427.80 : 15,644,141.70 = 9,421,658.20 : x
  2. Step 2: Convert to fraction form
    10,429,427.80/15,644,141.70 = 9,421,658.20/x
  3. Step 3: Cross multiply
    10,429,427.80x = 15,644,141.70 × 9,421,658.20
  4. Step 4: Simplify right side
    10,429,427.80x = 147,393,755,929,766.91
  5. Step 5: Solve for x
    x = 147,393,755,929,766.91/10,429,427.80
  6. Step 6: Final answer
    x = 14,132,487.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.