Home / 9,906.11-14,877.67-8,720.57

Finding the Fourth Proportional to 9,906.11, 14,877.67 and 8,720.57

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Solution

The fourth proportional to 9,906.11, 14,877.67 and 8,720.57 is: 13,097.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,906.11 : 14,877.67 = 8,720.57 : x
  2. Step 2: Convert to fraction form
    9,906.11/14,877.67 = 8,720.57/x
  3. Step 3: Cross multiply
    9,906.11x = 14,877.67 × 8,720.57
  4. Step 4: Simplify right side
    9,906.11x = 129,741,762.67
  5. Step 5: Solve for x
    x = 129,741,762.67/9,906.11
  6. Step 6: Final answer
    x = 13,097.15

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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.