Home / 29,217.71-40,320.35-15,788.96

Finding the Fourth Proportional to 29,217.71, 40,320.35 and 15,788.96

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Solution

The fourth proportional to 29,217.71, 40,320.35 and 15,788.96 is: 21,788.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,217.71 : 40,320.35 = 15,788.96 : x
  2. Step 2: Convert to fraction form
    29,217.71/40,320.35 = 15,788.96/x
  3. Step 3: Cross multiply
    29,217.71x = 40,320.35 × 15,788.96
  4. Step 4: Simplify right side
    29,217.71x = 636,616,323.20
  5. Step 5: Solve for x
    x = 636,616,323.20/29,217.71
  6. Step 6: Final answer
    x = 21,788.71

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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.