Home / 39,318.34-54,260.28-21,414.32

Finding the Fourth Proportional to 39,318.34, 54,260.28 and 21,414.32

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Solution

The fourth proportional to 39,318.34, 54,260.28 and 21,414.32 is: 29,552.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,318.34 : 54,260.28 = 21,414.32 : x
  2. Step 2: Convert to fraction form
    39,318.34/54,260.28 = 21,414.32/x
  3. Step 3: Cross multiply
    39,318.34x = 54,260.28 × 21,414.32
  4. Step 4: Simplify right side
    39,318.34x = 1,161,946,999.21
  5. Step 5: Solve for x
    x = 1,161,946,999.21/39,318.34
  6. Step 6: Final answer
    x = 29,552.29

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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.