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Finding the Fourth Proportional to 18,581, 27,875.82 and 13,377.56

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Solution

The fourth proportional to 18,581, 27,875.82 and 13,377.56 is: 20,069.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,581 : 27,875.82 = 13,377.56 : x
  2. Step 2: Convert to fraction form
    18,581/27,875.82 = 13,377.56/x
  3. Step 3: Cross multiply
    18,581x = 27,875.82 × 13,377.56
  4. Step 4: Simplify right side
    18,581x = 372,910,454.60
  5. Step 5: Solve for x
    x = 372,910,454.60/18,581
  6. Step 6: Final answer
    x = 20,069.45

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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.