Home / 20,947,133.57-28,906,591.16-12,126,958.76

Finding the Fourth Proportional to 20,947,133.57, 28,906,591.16 and 12,126,958.76

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Solution

The fourth proportional to 20,947,133.57, 28,906,591.16 and 12,126,958.76 is: 16,734,940.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947,133.57 : 28,906,591.16 = 12,126,958.76 : x
  2. Step 2: Convert to fraction form
    20,947,133.57/28,906,591.16 = 12,126,958.76/x
  3. Step 3: Cross multiply
    20,947,133.57x = 28,906,591.16 × 12,126,958.76
  4. Step 4: Simplify right side
    20,947,133.57x = 350,549,038,684,332.88
  5. Step 5: Solve for x
    x = 350,549,038,684,332.88/20,947,133.57
  6. Step 6: Final answer
    x = 16,734,940.73

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1.5x scale

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.