Home / 15,149.52-20,888.46-10,371.78

Finding the Fourth Proportional to 15,149.52, 20,888.46 and 10,371.78

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Solution

The fourth proportional to 15,149.52, 20,888.46 and 10,371.78 is: 14,300.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,149.52 : 20,888.46 = 10,371.78 : x
  2. Step 2: Convert to fraction form
    15,149.52/20,888.46 = 10,371.78/x
  3. Step 3: Cross multiply
    15,149.52x = 20,888.46 × 10,371.78
  4. Step 4: Simplify right side
    15,149.52x = 216,650,511.66
  5. Step 5: Solve for x
    x = 216,650,511.66/15,149.52
  6. Step 6: Final answer
    x = 14,300.82

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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.