Home / 28,002.30-42,003.45-19,691.70

Finding the Fourth Proportional to 28,002.30, 42,003.45 and 19,691.70

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Solution

The fourth proportional to 28,002.30, 42,003.45 and 19,691.70 is: 29,537.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,002.30 : 42,003.45 = 19,691.70 : x
  2. Step 2: Convert to fraction form
    28,002.30/42,003.45 = 19,691.70/x
  3. Step 3: Cross multiply
    28,002.30x = 42,003.45 × 19,691.70
  4. Step 4: Simplify right side
    28,002.30x = 827,119,336.37
  5. Step 5: Solve for x
    x = 827,119,336.37/28,002.30
  6. Step 6: Final answer
    x = 29,537.55

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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.