Home / 28,575.60-39,432.95-15,827.92

Finding the Fourth Proportional to 28,575.60, 39,432.95 and 15,827.92

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Solution

The fourth proportional to 28,575.60, 39,432.95 and 15,827.92 is: 21,841.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,575.60 : 39,432.95 = 15,827.92 : x
  2. Step 2: Convert to fraction form
    28,575.60/39,432.95 = 15,827.92/x
  3. Step 3: Cross multiply
    28,575.60x = 39,432.95 × 15,827.92
  4. Step 4: Simplify right side
    28,575.60x = 624,141,301.66
  5. Step 5: Solve for x
    x = 624,141,301.66/28,575.60
  6. Step 6: Final answer
    x = 21,841.76

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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.