Home / 20,809,770.86-31,152,465.19-12,587,530.11

Finding the Fourth Proportional to 20,809,770.86, 31,152,465.19 and 12,587,530.11

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Solution

The fourth proportional to 20,809,770.86, 31,152,465.19 and 12,587,530.11 is: 18,843,676.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,809,770.86 : 31,152,465.19 = 12,587,530.11 : x
  2. Step 2: Convert to fraction form
    20,809,770.86/31,152,465.19 = 12,587,530.11/x
  3. Step 3: Cross multiply
    20,809,770.86x = 31,152,465.19 × 12,587,530.11
  4. Step 4: Simplify right side
    20,809,770.86x = 392,132,593,478,764.50
  5. Step 5: Solve for x
    x = 392,132,593,478,764.50/20,809,770.86
  6. Step 6: Final answer
    x = 18,843,676.66

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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.