Home / 15,116.73-20,857.86-8,400.96

Finding the Fourth Proportional to 15,116.73, 20,857.86 and 8,400.96

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Solution

The fourth proportional to 15,116.73, 20,857.86 and 8,400.96 is: 11,591.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,116.73 : 20,857.86 = 8,400.96 : x
  2. Step 2: Convert to fraction form
    15,116.73/20,857.86 = 8,400.96/x
  3. Step 3: Cross multiply
    15,116.73x = 20,857.86 × 8,400.96
  4. Step 4: Simplify right side
    15,116.73x = 175,226,047.55
  5. Step 5: Solve for x
    x = 175,226,047.55/15,116.73
  6. Step 6: Final answer
    x = 11,591.53

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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.