Home / 18,885,873.60-28,328,810.40-13,146,310.80

Finding the Fourth Proportional to 18,885,873.60, 28,328,810.40 and 13,146,310.80

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Solution

The fourth proportional to 18,885,873.60, 28,328,810.40 and 13,146,310.80 is: 19,719,466.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,885,873.60 : 28,328,810.40 = 13,146,310.80 : x
  2. Step 2: Convert to fraction form
    18,885,873.60/28,328,810.40 = 13,146,310.80/x
  3. Step 3: Cross multiply
    18,885,873.60x = 28,328,810.40 × 13,146,310.80
  4. Step 4: Simplify right side
    18,885,873.60x = 372,419,346,112,672.31
  5. Step 5: Solve for x
    x = 372,419,346,112,672.31/18,885,873.60
  6. Step 6: Final answer
    x = 19,719,466.20

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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.