Home / 21,002,654.40-31,503,981.60-20,106,859.20

Finding the Fourth Proportional to 21,002,654.40, 31,503,981.60 and 20,106,859.20

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Solution

The fourth proportional to 21,002,654.40, 31,503,981.60 and 20,106,859.20 is: 30,160,288.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002,654.40 : 31,503,981.60 = 20,106,859.20 : x
  2. Step 2: Convert to fraction form
    21,002,654.40/31,503,981.60 = 20,106,859.20/x
  3. Step 3: Cross multiply
    21,002,654.40x = 31,503,981.60 × 20,106,859.20
  4. Step 4: Simplify right side
    21,002,654.40x = 633,446,122,270,590.75
  5. Step 5: Solve for x
    x = 633,446,122,270,590.75/21,002,654.40
  6. Step 6: Final answer
    x = 30,160,288.80

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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.