Home / 10,981.59-15,151.91-6,505.13

Finding the Fourth Proportional to 10,981.59, 15,151.91 and 6,505.13

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Solution

The fourth proportional to 10,981.59, 15,151.91 and 6,505.13 is: 8,975.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,981.59 : 15,151.91 = 6,505.13 : x
  2. Step 2: Convert to fraction form
    10,981.59/15,151.91 = 6,505.13/x
  3. Step 3: Cross multiply
    10,981.59x = 15,151.91 × 6,505.13
  4. Step 4: Simplify right side
    10,981.59x = 98,565,036.01
  5. Step 5: Solve for x
    x = 98,565,036.01/10,981.59
  6. Step 6: Final answer
    x = 8,975.48

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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.