Home / 12,625.60-18,936.72-9,132.28

Finding the Fourth Proportional to 12,625.60, 18,936.72 and 9,132.28

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Solution

The fourth proportional to 12,625.60, 18,936.72 and 9,132.28 is: 13,697.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,625.60 : 18,936.72 = 9,132.28 : x
  2. Step 2: Convert to fraction form
    12,625.60/18,936.72 = 9,132.28/x
  3. Step 3: Cross multiply
    12,625.60x = 18,936.72 × 9,132.28
  4. Step 4: Simplify right side
    12,625.60x = 172,935,429.32
  5. Step 5: Solve for x
    x = 172,935,429.32/12,625.60
  6. Step 6: Final answer
    x = 13,697.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.