Home / 28,562.87-42,853.06-12,781.19

Finding the Fourth Proportional to 28,562.87, 42,853.06 and 12,781.19

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Solution

The fourth proportional to 28,562.87, 42,853.06 and 12,781.19 is: 19,175.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,562.87 : 42,853.06 = 12,781.19 : x
  2. Step 2: Convert to fraction form
    28,562.87/42,853.06 = 12,781.19/x
  3. Step 3: Cross multiply
    28,562.87x = 42,853.06 × 12,781.19
  4. Step 4: Simplify right side
    28,562.87x = 547,712,855.72
  5. Step 5: Solve for x
    x = 547,712,855.72/28,562.87
  6. Step 6: Final answer
    x = 19,175.70

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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.