Home / 20,487,860.20-30,691,355.10-10,397,722.60

Finding the Fourth Proportional to 20,487,860.20, 30,691,355.10 and 10,397,722.60

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Solution

The fourth proportional to 20,487,860.20, 30,691,355.10 and 10,397,722.60 is: 15,576,062.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,487,860.20 : 30,691,355.10 = 10,397,722.60 : x
  2. Step 2: Convert to fraction form
    20,487,860.20/30,691,355.10 = 10,397,722.60/x
  3. Step 3: Cross multiply
    20,487,860.20x = 30,691,355.10 × 10,397,722.60
  4. Step 4: Simplify right side
    20,487,860.20x = 319,120,196,547,895.25
  5. Step 5: Solve for x
    x = 319,120,196,547,895.25/20,487,860.20
  6. Step 6: Final answer
    x = 15,576,062.77

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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.