Home / 12,812.24-17,681.20-7,146.94

Finding the Fourth Proportional to 12,812.24, 17,681.20 and 7,146.94

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Solution

The fourth proportional to 12,812.24, 17,681.20 and 7,146.94 is: 9,862.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,812.24 : 17,681.20 = 7,146.94 : x
  2. Step 2: Convert to fraction form
    12,812.24/17,681.20 = 7,146.94/x
  3. Step 3: Cross multiply
    12,812.24x = 17,681.20 × 7,146.94
  4. Step 4: Simplify right side
    12,812.24x = 126,366,479.76
  5. Step 5: Solve for x
    x = 126,366,479.76/12,812.24
  6. Step 6: Final answer
    x = 9,862.95

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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.