Home / 20,857,630.06-28,780,883.50-11,435,941.86

Finding the Fourth Proportional to 20,857,630.06, 28,780,883.50 and 11,435,941.86

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Solution

The fourth proportional to 20,857,630.06, 28,780,883.50 and 11,435,941.86 is: 15,780,149.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,857,630.06 : 28,780,883.50 = 11,435,941.86 : x
  2. Step 2: Convert to fraction form
    20,857,630.06/28,780,883.50 = 11,435,941.86/x
  3. Step 3: Cross multiply
    20,857,630.06x = 28,780,883.50 × 11,435,941.86
  4. Step 4: Simplify right side
    20,857,630.06x = 329,136,510,385,433.31
  5. Step 5: Solve for x
    x = 329,136,510,385,433.31/20,857,630.06
  6. Step 6: Final answer
    x = 15,780,149.01

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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.