Home / 28,019.28-42,019.20-15,558.24

Finding the Fourth Proportional to 28,019.28, 42,019.20 and 15,558.24

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Solution

The fourth proportional to 28,019.28, 42,019.20 and 15,558.24 is: 23,331.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,019.28 : 42,019.20 = 15,558.24 : x
  2. Step 2: Convert to fraction form
    28,019.28/42,019.20 = 15,558.24/x
  3. Step 3: Cross multiply
    28,019.28x = 42,019.20 × 15,558.24
  4. Step 4: Simplify right side
    28,019.28x = 653,744,798.21
  5. Step 5: Solve for x
    x = 653,744,798.21/28,019.28
  6. Step 6: Final answer
    x = 23,331.96

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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.