Home / 12,461.60-17,189.28-7,422.39

Finding the Fourth Proportional to 12,461.60, 17,189.28 and 7,422.39

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Solution

The fourth proportional to 12,461.60, 17,189.28 and 7,422.39 is: 10,238.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,461.60 : 17,189.28 = 7,422.39 : x
  2. Step 2: Convert to fraction form
    12,461.60/17,189.28 = 7,422.39/x
  3. Step 3: Cross multiply
    12,461.60x = 17,189.28 × 7,422.39
  4. Step 4: Simplify right side
    12,461.60x = 127,585,539.98
  5. Step 5: Solve for x
    x = 127,585,539.98/12,461.60
  6. Step 6: Final answer
    x = 10,238.29

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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.