Home / 21,318.48-29,411.10-12,364.38

Finding the Fourth Proportional to 21,318.48, 29,411.10 and 12,364.38

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Solution

The fourth proportional to 21,318.48, 29,411.10 and 12,364.38 is: 17,057.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,318.48 : 29,411.10 = 12,364.38 : x
  2. Step 2: Convert to fraction form
    21,318.48/29,411.10 = 12,364.38/x
  3. Step 3: Cross multiply
    21,318.48x = 29,411.10 × 12,364.38
  4. Step 4: Simplify right side
    21,318.48x = 363,650,016.62
  5. Step 5: Solve for x
    x = 363,650,016.62/21,318.48
  6. Step 6: Final answer
    x = 17,057.97

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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.