Home / 10,721.10-16,081.96-9,151.20

Finding the Fourth Proportional to 10,721.10, 16,081.96 and 9,151.20

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Solution

The fourth proportional to 10,721.10, 16,081.96 and 9,151.20 is: 13,727.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,721.10 : 16,081.96 = 9,151.20 : x
  2. Step 2: Convert to fraction form
    10,721.10/16,081.96 = 9,151.20/x
  3. Step 3: Cross multiply
    10,721.10x = 16,081.96 × 9,151.20
  4. Step 4: Simplify right side
    10,721.10x = 147,169,232.35
  5. Step 5: Solve for x
    x = 147,169,232.35/10,721.10
  6. Step 6: Final answer
    x = 13,727.06

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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.