Home / 13,178,618.20-18,186,352.91-7,377,447.61

Finding the Fourth Proportional to 13,178,618.20, 18,186,352.91 and 7,377,447.61

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Solution

The fourth proportional to 13,178,618.20, 18,186,352.91 and 7,377,447.61 is: 10,180,799.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178,618.20 : 18,186,352.91 = 7,377,447.61 : x
  2. Step 2: Convert to fraction form
    13,178,618.20/18,186,352.91 = 7,377,447.61/x
  3. Step 3: Cross multiply
    13,178,618.20x = 18,186,352.91 × 7,377,447.61
  4. Step 4: Simplify right side
    13,178,618.20x = 134,168,865,773,608.83
  5. Step 5: Solve for x
    x = 134,168,865,773,608.83/13,178,618.20
  6. Step 6: Final answer
    x = 10,180,799.21

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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.