Home / 28,148.20-42,158.88-19,752.11

Finding the Fourth Proportional to 28,148.20, 42,158.88 and 19,752.11

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Solution

The fourth proportional to 28,148.20, 42,158.88 and 19,752.11 is: 29,583.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,148.20 : 42,158.88 = 19,752.11 : x
  2. Step 2: Convert to fraction form
    28,148.20/42,158.88 = 19,752.11/x
  3. Step 3: Cross multiply
    28,148.20x = 42,158.88 × 19,752.11
  4. Step 4: Simplify right side
    28,148.20x = 832,726,835.24
  5. Step 5: Solve for x
    x = 832,726,835.24/28,148.20
  6. Step 6: Final answer
    x = 29,583.66

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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.