Home / 28,451.24-42,663.20-13,445.87

Finding the Fourth Proportional to 28,451.24, 42,663.20 and 13,445.87

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Solution

The fourth proportional to 28,451.24, 42,663.20 and 13,445.87 is: 20,162.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,451.24 : 42,663.20 = 13,445.87 : x
  2. Step 2: Convert to fraction form
    28,451.24/42,663.20 = 13,445.87/x
  3. Step 3: Cross multiply
    28,451.24x = 42,663.20 × 13,445.87
  4. Step 4: Simplify right side
    28,451.24x = 573,643,840.98
  5. Step 5: Solve for x
    x = 573,643,840.98/28,451.24
  6. Step 6: Final answer
    x = 20,162.35

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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.