Home / 20,791,621.38-28,680,918.30-12,088,831.95

Finding the Fourth Proportional to 20,791,621.38, 28,680,918.30 and 12,088,831.95

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Solution

The fourth proportional to 20,791,621.38, 28,680,918.30 and 12,088,831.95 is: 16,675,890.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,791,621.38 : 28,680,918.30 = 12,088,831.95 : x
  2. Step 2: Convert to fraction form
    20,791,621.38/28,680,918.30 = 12,088,831.95/x
  3. Step 3: Cross multiply
    20,791,621.38x = 28,680,918.30 × 12,088,831.95
  4. Step 4: Simplify right side
    20,791,621.38x = 346,718,801,500,379.69
  5. Step 5: Solve for x
    x = 346,718,801,500,379.69/20,791,621.38
  6. Step 6: Final answer
    x = 16,675,890.50

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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.