Home / 21,263,212.80-31,894,819.20-21,137,241.60

Finding the Fourth Proportional to 21,263,212.80, 31,894,819.20 and 21,137,241.60

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Solution

The fourth proportional to 21,263,212.80, 31,894,819.20 and 21,137,241.60 is: 31,705,862.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,263,212.80 : 31,894,819.20 = 21,137,241.60 : x
  2. Step 2: Convert to fraction form
    21,263,212.80/31,894,819.20 = 21,137,241.60/x
  3. Step 3: Cross multiply
    21,263,212.80x = 31,894,819.20 × 21,137,241.60
  4. Step 4: Simplify right side
    21,263,212.80x = 674,168,499,218,718.75
  5. Step 5: Solve for x
    x = 674,168,499,218,718.75/21,263,212.80
  6. Step 6: Final answer
    x = 31,705,862.40

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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.