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Finding the Fourth Proportional to 12,000.44, 16,561.78 and 8,970.30

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Solution

The fourth proportional to 12,000.44, 16,561.78 and 8,970.30 is: 12,379.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,000.44 : 16,561.78 = 8,970.30 : x
  2. Step 2: Convert to fraction form
    12,000.44/16,561.78 = 8,970.30/x
  3. Step 3: Cross multiply
    12,000.44x = 16,561.78 × 8,970.30
  4. Step 4: Simplify right side
    12,000.44x = 148,564,135.13
  5. Step 5: Solve for x
    x = 148,564,135.13/12,000.44
  6. Step 6: Final answer
    x = 12,379.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.