Home / 10,219,103.60-15,315,630.60-5,429,087.60

Finding the Fourth Proportional to 10,219,103.60, 15,315,630.60 and 5,429,087.60

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Solution

The fourth proportional to 10,219,103.60, 15,315,630.60 and 5,429,087.60 is: 8,136,711.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,219,103.60 : 15,315,630.60 = 5,429,087.60 : x
  2. Step 2: Convert to fraction form
    10,219,103.60/15,315,630.60 = 5,429,087.60/x
  3. Step 3: Cross multiply
    10,219,103.60x = 15,315,630.60 × 5,429,087.60
  4. Step 4: Simplify right side
    10,219,103.60x = 83,149,900,176,640.55
  5. Step 5: Solve for x
    x = 83,149,900,176,640.55/10,219,103.60
  6. Step 6: Final answer
    x = 8,136,711.73

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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.