Home / 19,309,915.20-28,890,223.20-12,591,451.20

Finding the Fourth Proportional to 19,309,915.20, 28,890,223.20 and 12,591,451.20

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Solution

The fourth proportional to 19,309,915.20, 28,890,223.20 and 12,591,451.20 is: 18,838,499.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,309,915.20 : 28,890,223.20 = 12,591,451.20 : x
  2. Step 2: Convert to fraction form
    19,309,915.20/28,890,223.20 = 12,591,451.20/x
  3. Step 3: Cross multiply
    19,309,915.20x = 28,890,223.20 × 12,591,451.20
  4. Step 4: Simplify right side
    19,309,915.20x = 363,769,835,579,907.81
  5. Step 5: Solve for x
    x = 363,769,835,579,907.81/19,309,915.20
  6. Step 6: Final answer
    x = 18,838,499.90

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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.