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Finding the Fourth Proportional to 17,776.71, 26,708.81 and 13,380.84

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Solution

The fourth proportional to 17,776.71, 26,708.81 and 13,380.84 is: 20,104.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,776.71 : 26,708.81 = 13,380.84 : x
  2. Step 2: Convert to fraction form
    17,776.71/26,708.81 = 13,380.84/x
  3. Step 3: Cross multiply
    17,776.71x = 26,708.81 × 13,380.84
  4. Step 4: Simplify right side
    17,776.71x = 357,386,246.30
  5. Step 5: Solve for x
    x = 357,386,246.30/17,776.71
  6. Step 6: Final answer
    x = 20,104.18

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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.