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Finding the Fourth Proportional to 10,952.10, 16,428.15 and 9,720.90

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Solution

The fourth proportional to 10,952.10, 16,428.15 and 9,720.90 is: 14,581.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,952.10 : 16,428.15 = 9,720.90 : x
  2. Step 2: Convert to fraction form
    10,952.10/16,428.15 = 9,720.90/x
  3. Step 3: Cross multiply
    10,952.10x = 16,428.15 × 9,720.90
  4. Step 4: Simplify right side
    10,952.10x = 159,696,403.34
  5. Step 5: Solve for x
    x = 159,696,403.34/10,952.10
  6. Step 6: Final answer
    x = 14,581.35

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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.