Home / 20,684,967.90-30,980,212.65-12,181,911.90

Finding the Fourth Proportional to 20,684,967.90, 30,980,212.65 and 12,181,911.90

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Solution

The fourth proportional to 20,684,967.90, 30,980,212.65 and 12,181,911.90 is: 18,245,047.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684,967.90 : 30,980,212.65 = 12,181,911.90 : x
  2. Step 2: Convert to fraction form
    20,684,967.90/30,980,212.65 = 12,181,911.90/x
  3. Step 3: Cross multiply
    20,684,967.90x = 30,980,212.65 × 12,181,911.90
  4. Step 4: Simplify right side
    20,684,967.90x = 377,398,221,145,565.50
  5. Step 5: Solve for x
    x = 377,398,221,145,565.50/20,684,967.90
  6. Step 6: Final answer
    x = 18,245,047.46

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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.