Home / 39,281.32-54,207.30-21,376.36

Finding the Fourth Proportional to 39,281.32, 54,207.30 and 21,376.36

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Solution

The fourth proportional to 39,281.32, 54,207.30 and 21,376.36 is: 29,498.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,281.32 : 54,207.30 = 21,376.36 : x
  2. Step 2: Convert to fraction form
    39,281.32/54,207.30 = 21,376.36/x
  3. Step 3: Cross multiply
    39,281.32x = 54,207.30 × 21,376.36
  4. Step 4: Simplify right side
    39,281.32x = 1,158,754,759.43
  5. Step 5: Solve for x
    x = 1,158,754,759.43/39,281.32
  6. Step 6: Final answer
    x = 29,498.88

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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.