Home / 22,187.10-30,616.89-12,755.70

Finding the Fourth Proportional to 22,187.10, 30,616.89 and 12,755.70

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Solution

The fourth proportional to 22,187.10, 30,616.89 and 12,755.70 is: 17,602.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,187.10 : 30,616.89 = 12,755.70 : x
  2. Step 2: Convert to fraction form
    22,187.10/30,616.89 = 12,755.70/x
  3. Step 3: Cross multiply
    22,187.10x = 30,616.89 × 12,755.70
  4. Step 4: Simplify right side
    22,187.10x = 390,539,863.77
  5. Step 5: Solve for x
    x = 390,539,863.77/22,187.10
  6. Step 6: Final answer
    x = 17,602.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.