Home / 10,877.40-15,010.80-5,909.40

Finding the Fourth Proportional to 10,877.40, 15,010.80 and 5,909.40

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Solution

The fourth proportional to 10,877.40, 15,010.80 and 5,909.40 is: 8,154.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,877.40 : 15,010.80 = 5,909.40 : x
  2. Step 2: Convert to fraction form
    10,877.40/15,010.80 = 5,909.40/x
  3. Step 3: Cross multiply
    10,877.40x = 15,010.80 × 5,909.40
  4. Step 4: Simplify right side
    10,877.40x = 88,704,821.52
  5. Step 5: Solve for x
    x = 88,704,821.52/10,877.40
  6. Step 6: Final answer
    x = 8,154.97

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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.