Home / 20,736,043.20-31,104,064.80-15,585,220.80

Finding the Fourth Proportional to 20,736,043.20, 31,104,064.80 and 15,585,220.80

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Solution

The fourth proportional to 20,736,043.20, 31,104,064.80 and 15,585,220.80 is: 23,377,831.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736,043.20 : 31,104,064.80 = 15,585,220.80 : x
  2. Step 2: Convert to fraction form
    20,736,043.20/31,104,064.80 = 15,585,220.80/x
  3. Step 3: Cross multiply
    20,736,043.20x = 31,104,064.80 × 15,585,220.80
  4. Step 4: Simplify right side
    20,736,043.20x = 484,763,717,685,507.88
  5. Step 5: Solve for x
    x = 484,763,717,685,507.88/20,736,043.20
  6. Step 6: Final answer
    x = 23,377,831.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.