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Finding the Fourth Proportional to 10,998.59, 15,174.08 and 7,223.81

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Solution

The fourth proportional to 10,998.59, 15,174.08 and 7,223.81 is: 9,966.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,998.59 : 15,174.08 = 7,223.81 : x
  2. Step 2: Convert to fraction form
    10,998.59/15,174.08 = 7,223.81/x
  3. Step 3: Cross multiply
    10,998.59x = 15,174.08 × 7,223.81
  4. Step 4: Simplify right side
    10,998.59x = 109,614,585.94
  5. Step 5: Solve for x
    x = 109,614,585.94/10,998.59
  6. Step 6: Final answer
    x = 9,966.24

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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.