Home / 28,338.93-42,512.33-12,542.71

Finding the Fourth Proportional to 28,338.93, 42,512.33 and 12,542.71

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Solution

The fourth proportional to 28,338.93, 42,512.33 and 12,542.71 is: 18,815.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,338.93 : 42,512.33 = 12,542.71 : x
  2. Step 2: Convert to fraction form
    28,338.93/42,512.33 = 12,542.71/x
  3. Step 3: Cross multiply
    28,338.93x = 42,512.33 × 12,542.71
  4. Step 4: Simplify right side
    28,338.93x = 533,219,826.61
  5. Step 5: Solve for x
    x = 533,219,826.61/28,338.93
  6. Step 6: Final answer
    x = 18,815.81

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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.