Home / 21,061,638.80-31,592,458.20-18,227,286.80

Finding the Fourth Proportional to 21,061,638.80, 31,592,458.20 and 18,227,286.80

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Solution

The fourth proportional to 21,061,638.80, 31,592,458.20 and 18,227,286.80 is: 27,340,930.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,061,638.80 : 31,592,458.20 = 18,227,286.80 : x
  2. Step 2: Convert to fraction form
    21,061,638.80/31,592,458.20 = 18,227,286.80/x
  3. Step 3: Cross multiply
    21,061,638.80x = 31,592,458.20 × 18,227,286.80
  4. Step 4: Simplify right side
    21,061,638.80x = 575,844,796,328,411.75
  5. Step 5: Solve for x
    x = 575,844,796,328,411.75/21,061,638.80
  6. Step 6: Final answer
    x = 27,340,930.20

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Similar ratio
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1.5x scale

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.