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Finding the Fourth Proportional to 18,376,947.70, 27,565,421.55 and 13,593,978.70

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Solution

The fourth proportional to 18,376,947.70, 27,565,421.55 and 13,593,978.70 is: 20,390,968.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,376,947.70 : 27,565,421.55 = 13,593,978.70 : x
  2. Step 2: Convert to fraction form
    18,376,947.70/27,565,421.55 = 13,593,978.70/x
  3. Step 3: Cross multiply
    18,376,947.70x = 27,565,421.55 × 13,593,978.70
  4. Step 4: Simplify right side
    18,376,947.70x = 374,723,753,407,221
  5. Step 5: Solve for x
    x = 374,723,753,407,221/18,376,947.70
  6. Step 6: Final answer
    x = 20,390,968.05

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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.