Home / 12,869.47-17,760.20-7,204.18

Finding the Fourth Proportional to 12,869.47, 17,760.20 and 7,204.18

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Solution

The fourth proportional to 12,869.47, 17,760.20 and 7,204.18 is: 9,941.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,869.47 : 17,760.20 = 7,204.18 : x
  2. Step 2: Convert to fraction form
    12,869.47/17,760.20 = 7,204.18/x
  3. Step 3: Cross multiply
    12,869.47x = 17,760.20 × 7,204.18
  4. Step 4: Simplify right side
    12,869.47x = 127,947,677.64
  5. Step 5: Solve for x
    x = 127,947,677.64/12,869.47
  6. Step 6: Final answer
    x = 9,941.95

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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.