Home / 28,122.40-42,232.20-15,000.40

Finding the Fourth Proportional to 28,122.40, 42,232.20 and 15,000.40

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Solution

The fourth proportional to 28,122.40, 42,232.20 and 15,000.40 is: 22,526.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,122.40 : 42,232.20 = 15,000.40 : x
  2. Step 2: Convert to fraction form
    28,122.40/42,232.20 = 15,000.40/x
  3. Step 3: Cross multiply
    28,122.40x = 42,232.20 × 15,000.40
  4. Step 4: Simplify right side
    28,122.40x = 633,499,892.88
  5. Step 5: Solve for x
    x = 633,499,892.88/28,122.40
  6. Step 6: Final answer
    x = 22,526.52

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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.