Home / 28,572.60-42,883.20-12,801.90

Finding the Fourth Proportional to 28,572.60, 42,883.20 and 12,801.90

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Solution

The fourth proportional to 28,572.60, 42,883.20 and 12,801.90 is: 19,213.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,572.60 : 42,883.20 = 12,801.90 : x
  2. Step 2: Convert to fraction form
    28,572.60/42,883.20 = 12,801.90/x
  3. Step 3: Cross multiply
    28,572.60x = 42,883.20 × 12,801.90
  4. Step 4: Simplify right side
    28,572.60x = 548,986,438.08
  5. Step 5: Solve for x
    x = 548,986,438.08/28,572.60
  6. Step 6: Final answer
    x = 19,213.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.