Home / 12,729.40-17,569.56-7,425.16

Finding the Fourth Proportional to 12,729.40, 17,569.56 and 7,425.16

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Solution

The fourth proportional to 12,729.40, 17,569.56 and 7,425.16 is: 10,248.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,729.40 : 17,569.56 = 7,425.16 : x
  2. Step 2: Convert to fraction form
    12,729.40/17,569.56 = 7,425.16/x
  3. Step 3: Cross multiply
    12,729.40x = 17,569.56 × 7,425.16
  4. Step 4: Simplify right side
    12,729.40x = 130,456,794.13
  5. Step 5: Solve for x
    x = 130,456,794.13/12,729.40
  6. Step 6: Final answer
    x = 10,248.46

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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.