Home / 20,218,982.10-30,328,473.15-12,566,231.70

Finding the Fourth Proportional to 20,218,982.10, 30,328,473.15 and 12,566,231.70

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Solution

The fourth proportional to 20,218,982.10, 30,328,473.15 and 12,566,231.70 is: 18,849,347.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218,982.10 : 30,328,473.15 = 12,566,231.70 : x
  2. Step 2: Convert to fraction form
    20,218,982.10/30,328,473.15 = 12,566,231.70/x
  3. Step 3: Cross multiply
    20,218,982.10x = 30,328,473.15 × 12,566,231.70
  4. Step 4: Simplify right side
    20,218,982.10x = 381,114,620,710,128.81
  5. Step 5: Solve for x
    x = 381,114,620,710,128.81/20,218,982.10
  6. Step 6: Final answer
    x = 18,849,347.55

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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.