Home / 10,517.18-15,677.45-10,356.80

Finding the Fourth Proportional to 10,517.18, 15,677.45 and 10,356.80

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Solution

The fourth proportional to 10,517.18, 15,677.45 and 10,356.80 is: 15,438.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,517.18 : 15,677.45 = 10,356.80 : x
  2. Step 2: Convert to fraction form
    10,517.18/15,677.45 = 10,356.80/x
  3. Step 3: Cross multiply
    10,517.18x = 15,677.45 × 10,356.80
  4. Step 4: Simplify right side
    10,517.18x = 162,368,122.83
  5. Step 5: Solve for x
    x = 162,368,122.83/10,517.18
  6. Step 6: Final answer
    x = 15,438.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.