Home / 13,641.39-18,825.30-8,335.08

Finding the Fourth Proportional to 13,641.39, 18,825.30 and 8,335.08

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Solution

The fourth proportional to 13,641.39, 18,825.30 and 8,335.08 is: 11,502.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,641.39 : 18,825.30 = 8,335.08 : x
  2. Step 2: Convert to fraction form
    13,641.39/18,825.30 = 8,335.08/x
  3. Step 3: Cross multiply
    13,641.39x = 18,825.30 × 8,335.08
  4. Step 4: Simplify right side
    13,641.39x = 156,910,381.52
  5. Step 5: Solve for x
    x = 156,910,381.52/13,641.39
  6. Step 6: Final answer
    x = 11,502.52

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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.