Home / 20,549,314.25-30,781,077.79-12,325,876.80

Finding the Fourth Proportional to 20,549,314.25, 30,781,077.79 and 12,325,876.80

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Solution

The fourth proportional to 20,549,314.25, 30,781,077.79 and 12,325,876.80 is: 18,463,086.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,549,314.25 : 30,781,077.79 = 12,325,876.80 : x
  2. Step 2: Convert to fraction form
    20,549,314.25/30,781,077.79 = 12,325,876.80/x
  3. Step 3: Cross multiply
    20,549,314.25x = 30,781,077.79 × 12,325,876.80
  4. Step 4: Simplify right side
    20,549,314.25x = 379,403,772,610,756.31
  5. Step 5: Solve for x
    x = 379,403,772,610,756.31/20,549,314.25
  6. Step 6: Final answer
    x = 18,463,086.80

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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.