Home / 28,272.90-42,451.20-15,817.80

Finding the Fourth Proportional to 28,272.90, 42,451.20 and 15,817.80

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Solution

The fourth proportional to 28,272.90, 42,451.20 and 15,817.80 is: 23,750.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,272.90 : 42,451.20 = 15,817.80 : x
  2. Step 2: Convert to fraction form
    28,272.90/42,451.20 = 15,817.80/x
  3. Step 3: Cross multiply
    28,272.90x = 42,451.20 × 15,817.80
  4. Step 4: Simplify right side
    28,272.90x = 671,484,591.36
  5. Step 5: Solve for x
    x = 671,484,591.36/28,272.90
  6. Step 6: Final answer
    x = 23,750.11

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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.