Home / 12,645.12-17,447.28-7,339.02

Finding the Fourth Proportional to 12,645.12, 17,447.28 and 7,339.02

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Solution

The fourth proportional to 12,645.12, 17,447.28 and 7,339.02 is: 10,126.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645.12 : 17,447.28 = 7,339.02 : x
  2. Step 2: Convert to fraction form
    12,645.12/17,447.28 = 7,339.02/x
  3. Step 3: Cross multiply
    12,645.12x = 17,447.28 × 7,339.02
  4. Step 4: Simplify right side
    12,645.12x = 128,045,936.87
  5. Step 5: Solve for x
    x = 128,045,936.87/12,645.12
  6. Step 6: Final answer
    x = 10,126.11

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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.