Home / 10,990.50-15,187.59-8,332.98

Finding the Fourth Proportional to 10,990.50, 15,187.59 and 8,332.98

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Solution

The fourth proportional to 10,990.50, 15,187.59 and 8,332.98 is: 11,515.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,990.50 : 15,187.59 = 8,332.98 : x
  2. Step 2: Convert to fraction form
    10,990.50/15,187.59 = 8,332.98/x
  3. Step 3: Cross multiply
    10,990.50x = 15,187.59 × 8,332.98
  4. Step 4: Simplify right side
    10,990.50x = 126,557,883.72
  5. Step 5: Solve for x
    x = 126,557,883.72/10,990.50
  6. Step 6: Final answer
    x = 11,515.21

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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.