Home / 42,613.80-63,920.70-21,877.80

Finding the Fourth Proportional to 42,613.80, 63,920.70 and 21,877.80

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Solution

The fourth proportional to 42,613.80, 63,920.70 and 21,877.80 is: 32,816.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,613.80 : 63,920.70 = 21,877.80 : x
  2. Step 2: Convert to fraction form
    42,613.80/63,920.70 = 21,877.80/x
  3. Step 3: Cross multiply
    42,613.80x = 63,920.70 × 21,877.80
  4. Step 4: Simplify right side
    42,613.80x = 1,398,444,290.46
  5. Step 5: Solve for x
    x = 1,398,444,290.46/42,613.80
  6. Step 6: Final answer
    x = 32,816.70

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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.