Home / 28,459.61-42,719.48-15,990.29

Finding the Fourth Proportional to 28,459.61, 42,719.48 and 15,990.29

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Solution

The fourth proportional to 28,459.61, 42,719.48 and 15,990.29 is: 24,002.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,459.61 : 42,719.48 = 15,990.29 : x
  2. Step 2: Convert to fraction form
    28,459.61/42,719.48 = 15,990.29/x
  3. Step 3: Cross multiply
    28,459.61x = 42,719.48 × 15,990.29
  4. Step 4: Simplify right side
    28,459.61x = 683,096,793.90
  5. Step 5: Solve for x
    x = 683,096,793.90/28,459.61
  6. Step 6: Final answer
    x = 24,002.32

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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.