Home / 20,739,267.77-28,612,207.06-12,990,820.73

Finding the Fourth Proportional to 20,739,267.77, 28,612,207.06 and 12,990,820.73

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Solution

The fourth proportional to 20,739,267.77, 28,612,207.06 and 12,990,820.73 is: 17,922,332.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739,267.77 : 28,612,207.06 = 12,990,820.73 : x
  2. Step 2: Convert to fraction form
    20,739,267.77/28,612,207.06 = 12,990,820.73/x
  3. Step 3: Cross multiply
    20,739,267.77x = 28,612,207.06 × 12,990,820.73
  4. Step 4: Simplify right side
    20,739,267.77x = 371,696,052,430,562.25
  5. Step 5: Solve for x
    x = 371,696,052,430,562.25/20,739,267.77
  6. Step 6: Final answer
    x = 17,922,332.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.