Home / 18,687,645.20-28,031,467.80-7,328,464.40

Finding the Fourth Proportional to 18,687,645.20, 28,031,467.80 and 7,328,464.40

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Solution

The fourth proportional to 18,687,645.20, 28,031,467.80 and 7,328,464.40 is: 10,992,696.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687,645.20 : 28,031,467.80 = 7,328,464.40 : x
  2. Step 2: Convert to fraction form
    18,687,645.20/28,031,467.80 = 7,328,464.40/x
  3. Step 3: Cross multiply
    18,687,645.20x = 28,031,467.80 × 7,328,464.40
  4. Step 4: Simplify right side
    18,687,645.20x = 205,427,613,852,046.34
  5. Step 5: Solve for x
    x = 205,427,613,852,046.34/18,687,645.20
  6. Step 6: Final answer
    x = 10,992,696.60

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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.