Home / 13,238.64-18,275.04-8,764.56

Finding the Fourth Proportional to 13,238.64, 18,275.04 and 8,764.56

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Solution

The fourth proportional to 13,238.64, 18,275.04 and 8,764.56 is: 12,098.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,238.64 : 18,275.04 = 8,764.56 : x
  2. Step 2: Convert to fraction form
    13,238.64/18,275.04 = 8,764.56/x
  3. Step 3: Cross multiply
    13,238.64x = 18,275.04 × 8,764.56
  4. Step 4: Simplify right side
    13,238.64x = 160,172,684.58
  5. Step 5: Solve for x
    x = 160,172,684.58/13,238.64
  6. Step 6: Final answer
    x = 12,098.88

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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.