Home / 12,313.90-18,451.95-9,179.20

Finding the Fourth Proportional to 12,313.90, 18,451.95 and 9,179.20

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Solution

The fourth proportional to 12,313.90, 18,451.95 and 9,179.20 is: 13,754.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,313.90 : 18,451.95 = 9,179.20 : x
  2. Step 2: Convert to fraction form
    12,313.90/18,451.95 = 9,179.20/x
  3. Step 3: Cross multiply
    12,313.90x = 18,451.95 × 9,179.20
  4. Step 4: Simplify right side
    12,313.90x = 169,374,139.44
  5. Step 5: Solve for x
    x = 169,374,139.44/12,313.90
  6. Step 6: Final answer
    x = 13,754.71

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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.