Home / 20,385,698.50-28,132,268.50-11,218,341.24

Finding the Fourth Proportional to 20,385,698.50, 28,132,268.50 and 11,218,341.24

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Solution

The fourth proportional to 20,385,698.50, 28,132,268.50 and 11,218,341.24 is: 15,481,313.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,385,698.50 : 28,132,268.50 = 11,218,341.24 : x
  2. Step 2: Convert to fraction form
    20,385,698.50/28,132,268.50 = 11,218,341.24/x
  3. Step 3: Cross multiply
    20,385,698.50x = 28,132,268.50 × 11,218,341.24
  4. Step 4: Simplify right side
    20,385,698.50x = 315,597,387,888,302.94
  5. Step 5: Solve for x
    x = 315,597,387,888,302.94/20,385,698.50
  6. Step 6: Final answer
    x = 15,481,313.43

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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.