Home / 20,784,067.60-31,176,101.40-11,826,115.60

Finding the Fourth Proportional to 20,784,067.60, 31,176,101.40 and 11,826,115.60

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Solution

The fourth proportional to 20,784,067.60, 31,176,101.40 and 11,826,115.60 is: 17,739,173.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784,067.60 : 31,176,101.40 = 11,826,115.60 : x
  2. Step 2: Convert to fraction form
    20,784,067.60/31,176,101.40 = 11,826,115.60/x
  3. Step 3: Cross multiply
    20,784,067.60x = 31,176,101.40 × 11,826,115.60
  4. Step 4: Simplify right side
    20,784,067.60x = 368,692,179,113,721.81
  5. Step 5: Solve for x
    x = 368,692,179,113,721.81/20,784,067.60
  6. Step 6: Final answer
    x = 17,739,173.40

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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.