Home / 12,440-17,167.28-6,851.36

Finding the Fourth Proportional to 12,440, 17,167.28 and 6,851.36

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Solution

The fourth proportional to 12,440, 17,167.28 and 6,851.36 is: 9,454.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,440 : 17,167.28 = 6,851.36 : x
  2. Step 2: Convert to fraction form
    12,440/17,167.28 = 6,851.36/x
  3. Step 3: Cross multiply
    12,440x = 17,167.28 × 6,851.36
  4. Step 4: Simplify right side
    12,440x = 117,619,215.50
  5. Step 5: Solve for x
    x = 117,619,215.50/12,440
  6. Step 6: Final answer
    x = 9,454.92

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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.