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Finding the Fourth Proportional to 13,641.66, 18,828.18 and 8,867.52

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Solution

The fourth proportional to 13,641.66, 18,828.18 and 8,867.52 is: 12,238.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,641.66 : 18,828.18 = 8,867.52 : x
  2. Step 2: Convert to fraction form
    13,641.66/18,828.18 = 8,867.52/x
  3. Step 3: Cross multiply
    13,641.66x = 18,828.18 × 8,867.52
  4. Step 4: Simplify right side
    13,641.66x = 166,959,262.71
  5. Step 5: Solve for x
    x = 166,959,262.71/13,641.66
  6. Step 6: Final answer
    x = 12,238.93

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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.