Home / 21,283,212.60-31,924,818.90-20,947,289.40

Finding the Fourth Proportional to 21,283,212.60, 31,924,818.90 and 20,947,289.40

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Solution

The fourth proportional to 21,283,212.60, 31,924,818.90 and 20,947,289.40 is: 31,420,934.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,283,212.60 : 31,924,818.90 = 20,947,289.40 : x
  2. Step 2: Convert to fraction form
    21,283,212.60/31,924,818.90 = 20,947,289.40/x
  3. Step 3: Cross multiply
    21,283,212.60x = 31,924,818.90 × 20,947,289.40
  4. Step 4: Simplify right side
    21,283,212.60x = 668,738,420,540,889.62
  5. Step 5: Solve for x
    x = 668,738,420,540,889.62/21,283,212.60
  6. Step 6: Final answer
    x = 31,420,934.10

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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.