Home / 15,110.74-20,854.23-9,143.88

Finding the Fourth Proportional to 15,110.74, 20,854.23 and 9,143.88

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Solution

The fourth proportional to 15,110.74, 20,854.23 and 9,143.88 is: 12,619.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,110.74 : 20,854.23 = 9,143.88 : x
  2. Step 2: Convert to fraction form
    15,110.74/20,854.23 = 9,143.88/x
  3. Step 3: Cross multiply
    15,110.74x = 20,854.23 × 9,143.88
  4. Step 4: Simplify right side
    15,110.74x = 190,688,576.61
  5. Step 5: Solve for x
    x = 190,688,576.61/15,110.74
  6. Step 6: Final answer
    x = 12,619.41

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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.