Home / 20,218,980.60-30,328,470.90-12,566,230.20

Finding the Fourth Proportional to 20,218,980.60, 30,328,470.90 and 12,566,230.20

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Solution

The fourth proportional to 20,218,980.60, 30,328,470.90 and 12,566,230.20 is: 18,849,345.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218,980.60 : 30,328,470.90 = 12,566,230.20 : x
  2. Step 2: Convert to fraction form
    20,218,980.60/30,328,470.90 = 12,566,230.20/x
  3. Step 3: Cross multiply
    20,218,980.60x = 30,328,470.90 × 12,566,230.20
  4. Step 4: Simplify right side
    20,218,980.60x = 381,114,546,943,401.12
  5. Step 5: Solve for x
    x = 381,114,546,943,401.12/20,218,980.60
  6. Step 6: Final answer
    x = 18,849,345.30

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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.