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Finding the Fourth Proportional to 11,359, 15,677.49 and 10,860.85

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Solution

The fourth proportional to 11,359, 15,677.49 and 10,860.85 is: 14,989.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,359 : 15,677.49 = 10,860.85 : x
  2. Step 2: Convert to fraction form
    11,359/15,677.49 = 10,860.85/x
  3. Step 3: Cross multiply
    11,359x = 15,677.49 × 10,860.85
  4. Step 4: Simplify right side
    11,359x = 170,270,867.27
  5. Step 5: Solve for x
    x = 170,270,867.27/11,359
  6. Step 6: Final answer
    x = 14,989.95

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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.