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Finding the Fourth Proportional to 12,862.80, 17,746.02 and 7,825.41

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Solution

The fourth proportional to 12,862.80, 17,746.02 and 7,825.41 is: 10,796.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,862.80 : 17,746.02 = 7,825.41 : x
  2. Step 2: Convert to fraction form
    12,862.80/17,746.02 = 7,825.41/x
  3. Step 3: Cross multiply
    12,862.80x = 17,746.02 × 7,825.41
  4. Step 4: Simplify right side
    12,862.80x = 138,869,882.37
  5. Step 5: Solve for x
    x = 138,869,882.37/12,862.80
  6. Step 6: Final answer
    x = 10,796.24

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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.