Home / 15,330.66-21,160.38-9,047.22

Finding the Fourth Proportional to 15,330.66, 21,160.38 and 9,047.22

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Solution

The fourth proportional to 15,330.66, 21,160.38 and 9,047.22 is: 12,487.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,330.66 : 21,160.38 = 9,047.22 : x
  2. Step 2: Convert to fraction form
    15,330.66/21,160.38 = 9,047.22/x
  3. Step 3: Cross multiply
    15,330.66x = 21,160.38 × 9,047.22
  4. Step 4: Simplify right side
    15,330.66x = 191,442,613.14
  5. Step 5: Solve for x
    x = 191,442,613.14/15,330.66
  6. Step 6: Final answer
    x = 12,487.56

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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.