Home / 12,472.20-18,710.10-4,152.60

Finding the Fourth Proportional to 12,472.20, 18,710.10 and 4,152.60

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Solution

The fourth proportional to 12,472.20, 18,710.10 and 4,152.60 is: 6,229.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,472.20 : 18,710.10 = 4,152.60 : x
  2. Step 2: Convert to fraction form
    12,472.20/18,710.10 = 4,152.60/x
  3. Step 3: Cross multiply
    12,472.20x = 18,710.10 × 4,152.60
  4. Step 4: Simplify right side
    12,472.20x = 77,695,561.26
  5. Step 5: Solve for x
    x = 77,695,561.26/12,472.20
  6. Step 6: Final answer
    x = 6,229.50

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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.