Home / 28,281.76-42,447.24-18,432.09

Finding the Fourth Proportional to 28,281.76, 42,447.24 and 18,432.09

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Solution

The fourth proportional to 28,281.76, 42,447.24 and 18,432.09 is: 27,664.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,281.76 : 42,447.24 = 18,432.09 : x
  2. Step 2: Convert to fraction form
    28,281.76/42,447.24 = 18,432.09/x
  3. Step 3: Cross multiply
    28,281.76x = 42,447.24 × 18,432.09
  4. Step 4: Simplify right side
    28,281.76x = 782,391,347.93
  5. Step 5: Solve for x
    x = 782,391,347.93/28,281.76
  6. Step 6: Final answer
    x = 27,664.17

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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.