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Finding the Fourth Proportional to 18,971.62, 26,182.65 and 13,517.62

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Solution

The fourth proportional to 18,971.62, 26,182.65 and 13,517.62 is: 18,655.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,971.62 : 26,182.65 = 13,517.62 : x
  2. Step 2: Convert to fraction form
    18,971.62/26,182.65 = 13,517.62/x
  3. Step 3: Cross multiply
    18,971.62x = 26,182.65 × 13,517.62
  4. Step 4: Simplify right side
    18,971.62x = 353,927,113.29
  5. Step 5: Solve for x
    x = 353,927,113.29/18,971.62
  6. Step 6: Final answer
    x = 18,655.61

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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.