Home / 20,577,872.79-28,395,417.86-11,878,847.93

Finding the Fourth Proportional to 20,577,872.79, 28,395,417.86 and 11,878,847.93

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Solution

The fourth proportional to 20,577,872.79, 28,395,417.86 and 11,878,847.93 is: 16,391,628.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,577,872.79 : 28,395,417.86 = 11,878,847.93 : x
  2. Step 2: Convert to fraction form
    20,577,872.79/28,395,417.86 = 11,878,847.93/x
  3. Step 3: Cross multiply
    20,577,872.79x = 28,395,417.86 × 11,878,847.93
  4. Step 4: Simplify right side
    20,577,872.79x = 337,304,850,466,374.75
  5. Step 5: Solve for x
    x = 337,304,850,466,374.75/20,577,872.79
  6. Step 6: Final answer
    x = 16,391,628.71

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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.