Home / 20,791,628.88-28,680,928.65-12,088,839.45

Finding the Fourth Proportional to 20,791,628.88, 28,680,928.65 and 12,088,839.45

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Solution

The fourth proportional to 20,791,628.88, 28,680,928.65 and 12,088,839.45 is: 16,675,900.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,791,628.88 : 28,680,928.65 = 12,088,839.45 : x
  2. Step 2: Convert to fraction form
    20,791,628.88/28,680,928.65 = 12,088,839.45/x
  3. Step 3: Cross multiply
    20,791,628.88x = 28,680,928.65 × 12,088,839.45
  4. Step 4: Simplify right side
    20,791,628.88x = 346,719,141,726,755.19
  5. Step 5: Solve for x
    x = 346,719,141,726,755.19/20,791,628.88
  6. Step 6: Final answer
    x = 16,675,900.85

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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.