Home / 13,368.95-18,449.17-8,661.43

Finding the Fourth Proportional to 13,368.95, 18,449.17 and 8,661.43

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Solution

The fourth proportional to 13,368.95, 18,449.17 and 8,661.43 is: 11,952.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,368.95 : 18,449.17 = 8,661.43 : x
  2. Step 2: Convert to fraction form
    13,368.95/18,449.17 = 8,661.43/x
  3. Step 3: Cross multiply
    13,368.95x = 18,449.17 × 8,661.43
  4. Step 4: Simplify right side
    13,368.95x = 159,796,195.92
  5. Step 5: Solve for x
    x = 159,796,195.92/13,368.95
  6. Step 6: Final answer
    x = 11,952.79

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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.