Home / 12,909.95-17,821.24-10,930.85

Finding the Fourth Proportional to 12,909.95, 17,821.24 and 10,930.85

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Solution

The fourth proportional to 12,909.95, 17,821.24 and 10,930.85 is: 15,089.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,909.95 : 17,821.24 = 10,930.85 : x
  2. Step 2: Convert to fraction form
    12,909.95/17,821.24 = 10,930.85/x
  3. Step 3: Cross multiply
    12,909.95x = 17,821.24 × 10,930.85
  4. Step 4: Simplify right side
    12,909.95x = 194,801,184.82
  5. Step 5: Solve for x
    x = 194,801,184.82/12,909.95
  6. Step 6: Final answer
    x = 15,089.23

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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.