Home / 20,480,043.79-28,263,319.05-11,778,223.20

Finding the Fourth Proportional to 20,480,043.79, 28,263,319.05 and 11,778,223.20

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Solution

The fourth proportional to 20,480,043.79, 28,263,319.05 and 11,778,223.20 is: 16,254,441.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,480,043.79 : 28,263,319.05 = 11,778,223.20 : x
  2. Step 2: Convert to fraction form
    20,480,043.79/28,263,319.05 = 11,778,223.20/x
  3. Step 3: Cross multiply
    20,480,043.79x = 28,263,319.05 × 11,778,223.20
  4. Step 4: Simplify right side
    20,480,043.79x = 332,891,680,143,711.94
  5. Step 5: Solve for x
    x = 332,891,680,143,711.94/20,480,043.79
  6. Step 6: Final answer
    x = 16,254,441.81

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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.