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Finding the Fourth Proportional to 18,347.58, 27,511.92 and 13,079.88

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Solution

The fourth proportional to 18,347.58, 27,511.92 and 13,079.88 is: 19,613.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,347.58 : 27,511.92 = 13,079.88 : x
  2. Step 2: Convert to fraction form
    18,347.58/27,511.92 = 13,079.88/x
  3. Step 3: Cross multiply
    18,347.58x = 27,511.92 × 13,079.88
  4. Step 4: Simplify right side
    18,347.58x = 359,852,612.17
  5. Step 5: Solve for x
    x = 359,852,612.17/18,347.58
  6. Step 6: Final answer
    x = 19,613.08

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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.