Home / 21,022,074.80-31,533,112.20-12,377,301.20

Finding the Fourth Proportional to 21,022,074.80, 31,533,112.20 and 12,377,301.20

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Solution

The fourth proportional to 21,022,074.80, 31,533,112.20 and 12,377,301.20 is: 18,565,951.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,022,074.80 : 31,533,112.20 = 12,377,301.20 : x
  2. Step 2: Convert to fraction form
    21,022,074.80/31,533,112.20 = 12,377,301.20/x
  3. Step 3: Cross multiply
    21,022,074.80x = 31,533,112.20 × 12,377,301.20
  4. Step 4: Simplify right side
    21,022,074.80x = 390,294,827,472,794.62
  5. Step 5: Solve for x
    x = 390,294,827,472,794.62/21,022,074.80
  6. Step 6: Final answer
    x = 18,565,951.80

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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.