Home / 20,186,129.80-30,243,109.20-12,284,498.80

Finding the Fourth Proportional to 20,186,129.80, 30,243,109.20 and 12,284,498.80

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Solution

The fourth proportional to 20,186,129.80, 30,243,109.20 and 12,284,498.80 is: 18,404,787.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,186,129.80 : 30,243,109.20 = 12,284,498.80 : x
  2. Step 2: Convert to fraction form
    20,186,129.80/30,243,109.20 = 12,284,498.80/x
  3. Step 3: Cross multiply
    20,186,129.80x = 30,243,109.20 × 12,284,498.80
  4. Step 4: Simplify right side
    20,186,129.80x = 371,521,438,675,669
  5. Step 5: Solve for x
    x = 371,521,438,675,669/20,186,129.80
  6. Step 6: Final answer
    x = 18,404,787.96

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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.