Home / 12,881.26-17,775.24-7,215.04

Finding the Fourth Proportional to 12,881.26, 17,775.24 and 7,215.04

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Solution

The fourth proportional to 12,881.26, 17,775.24 and 7,215.04 is: 9,956.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,881.26 : 17,775.24 = 7,215.04 : x
  2. Step 2: Convert to fraction form
    12,881.26/17,775.24 = 7,215.04/x
  3. Step 3: Cross multiply
    12,881.26x = 17,775.24 × 7,215.04
  4. Step 4: Simplify right side
    12,881.26x = 128,249,067.61
  5. Step 5: Solve for x
    x = 128,249,067.61/12,881.26
  6. Step 6: Final answer
    x = 9,956.25

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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.