Home / 39,342.71-54,293.24-21,438.20

Finding the Fourth Proportional to 39,342.71, 54,293.24 and 21,438.20

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Solution

The fourth proportional to 39,342.71, 54,293.24 and 21,438.20 is: 29,584.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,342.71 : 54,293.24 = 21,438.20 : x
  2. Step 2: Convert to fraction form
    39,342.71/54,293.24 = 21,438.20/x
  3. Step 3: Cross multiply
    39,342.71x = 54,293.24 × 21,438.20
  4. Step 4: Simplify right side
    39,342.71x = 1,163,949,337.77
  5. Step 5: Solve for x
    x = 1,163,949,337.77/39,342.71
  6. Step 6: Final answer
    x = 29,584.88

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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.