Home / 28,581.12-42,886.31-13,605.17

Finding the Fourth Proportional to 28,581.12, 42,886.31 and 13,605.17

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Solution

The fourth proportional to 28,581.12, 42,886.31 and 13,605.17 is: 20,414.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,581.12 : 42,886.31 = 13,605.17 : x
  2. Step 2: Convert to fraction form
    28,581.12/42,886.31 = 13,605.17/x
  3. Step 3: Cross multiply
    28,581.12x = 42,886.31 × 13,605.17
  4. Step 4: Simplify right side
    28,581.12x = 583,475,255.77
  5. Step 5: Solve for x
    x = 583,475,255.77/28,581.12
  6. Step 6: Final answer
    x = 20,414.71

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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.