Home / 28,357.57-42,545.82-12,560.45

Finding the Fourth Proportional to 28,357.57, 42,545.82 and 12,560.45

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Solution

The fourth proportional to 28,357.57, 42,545.82 and 12,560.45 is: 18,844.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,357.57 : 42,545.82 = 12,560.45 : x
  2. Step 2: Convert to fraction form
    28,357.57/42,545.82 = 12,560.45/x
  3. Step 3: Cross multiply
    28,357.57x = 42,545.82 × 12,560.45
  4. Step 4: Simplify right side
    28,357.57x = 534,394,644.82
  5. Step 5: Solve for x
    x = 534,394,644.82/28,357.57
  6. Step 6: Final answer
    x = 18,844.87

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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.