Home / 20,218,997.10-30,328,495.65-12,566,246.70

Finding the Fourth Proportional to 20,218,997.10, 30,328,495.65 and 12,566,246.70

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Solution

The fourth proportional to 20,218,997.10, 30,328,495.65 and 12,566,246.70 is: 18,849,370.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218,997.10 : 30,328,495.65 = 12,566,246.70 : x
  2. Step 2: Convert to fraction form
    20,218,997.10/30,328,495.65 = 12,566,246.70/x
  3. Step 3: Cross multiply
    20,218,997.10x = 30,328,495.65 × 12,566,246.70
  4. Step 4: Simplify right side
    20,218,997.10x = 381,115,358,377,776.81
  5. Step 5: Solve for x
    x = 381,115,358,377,776.81/20,218,997.10
  6. Step 6: Final answer
    x = 18,849,370.05

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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.