Home / 28,177.39-42,288.17-12,393.39

Finding the Fourth Proportional to 28,177.39, 42,288.17 and 12,393.39

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Solution

The fourth proportional to 28,177.39, 42,288.17 and 12,393.39 is: 18,599.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,177.39 : 42,288.17 = 12,393.39 : x
  2. Step 2: Convert to fraction form
    28,177.39/42,288.17 = 12,393.39/x
  3. Step 3: Cross multiply
    28,177.39x = 42,288.17 × 12,393.39
  4. Step 4: Simplify right side
    28,177.39x = 524,093,721.23
  5. Step 5: Solve for x
    x = 524,093,721.23/28,177.39
  6. Step 6: Final answer
    x = 18,599.80

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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.