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Finding the Fourth Proportional to 18,157,084.80, 27,250,498.80 and 18,015,367.20

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Solution

The fourth proportional to 18,157,084.80, 27,250,498.80 and 18,015,367.20 is: 27,037,806.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,157,084.80 : 27,250,498.80 = 18,015,367.20 : x
  2. Step 2: Convert to fraction form
    18,157,084.80/27,250,498.80 = 18,015,367.20/x
  3. Step 3: Cross multiply
    18,157,084.80x = 27,250,498.80 × 18,015,367.20
  4. Step 4: Simplify right side
    18,157,084.80x = 490,927,742,265,159.38
  5. Step 5: Solve for x
    x = 490,927,742,265,159.38/18,157,084.80
  6. Step 6: Final answer
    x = 27,037,806.33

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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.