Home / 28,184.80-42,238.32-21,251.68

Finding the Fourth Proportional to 28,184.80, 42,238.32 and 21,251.68

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Solution

The fourth proportional to 28,184.80, 42,238.32 and 21,251.68 is: 31,848.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,184.80 : 42,238.32 = 21,251.68 : x
  2. Step 2: Convert to fraction form
    28,184.80/42,238.32 = 21,251.68/x
  3. Step 3: Cross multiply
    28,184.80x = 42,238.32 × 21,251.68
  4. Step 4: Simplify right side
    28,184.80x = 897,635,260.38
  5. Step 5: Solve for x
    x = 897,635,260.38/28,184.80
  6. Step 6: Final answer
    x = 31,848.20

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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.