Home / 42,461.10-63,691.74-12,879.18

Finding the Fourth Proportional to 42,461.10, 63,691.74 and 12,879.18

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Solution

The fourth proportional to 42,461.10, 63,691.74 and 12,879.18 is: 19,318.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,461.10 : 63,691.74 = 12,879.18 : x
  2. Step 2: Convert to fraction form
    42,461.10/63,691.74 = 12,879.18/x
  3. Step 3: Cross multiply
    42,461.10x = 63,691.74 × 12,879.18
  4. Step 4: Simplify right side
    42,461.10x = 820,297,383.97
  5. Step 5: Solve for x
    x = 820,297,383.97/42,461.10
  6. Step 6: Final answer
    x = 19,318.80

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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.