Home / 10,257,200.40-15,385,800.60-7,865,715.90

Finding the Fourth Proportional to 10,257,200.40, 15,385,800.60 and 7,865,715.90

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Solution

The fourth proportional to 10,257,200.40, 15,385,800.60 and 7,865,715.90 is: 11,798,573.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,257,200.40 : 15,385,800.60 = 7,865,715.90 : x
  2. Step 2: Convert to fraction form
    10,257,200.40/15,385,800.60 = 7,865,715.90/x
  3. Step 3: Cross multiply
    10,257,200.40x = 15,385,800.60 × 7,865,715.90
  4. Step 4: Simplify right side
    10,257,200.40x = 121,020,336,413,649.55
  5. Step 5: Solve for x
    x = 121,020,336,413,649.55/10,257,200.40
  6. Step 6: Final answer
    x = 11,798,573.85

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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.