Home / 12,708.40-17,538.16-7,119.44

Finding the Fourth Proportional to 12,708.40, 17,538.16 and 7,119.44

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Solution

The fourth proportional to 12,708.40, 17,538.16 and 7,119.44 is: 9,825.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,708.40 : 17,538.16 = 7,119.44 : x
  2. Step 2: Convert to fraction form
    12,708.40/17,538.16 = 7,119.44/x
  3. Step 3: Cross multiply
    12,708.40x = 17,538.16 × 7,119.44
  4. Step 4: Simplify right side
    12,708.40x = 124,861,877.83
  5. Step 5: Solve for x
    x = 124,861,877.83/12,708.40
  6. Step 6: Final answer
    x = 9,825.15

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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.