Home / 10,217,115.20-15,325,672.80-8,390,532.80

Finding the Fourth Proportional to 10,217,115.20, 15,325,672.80 and 8,390,532.80

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Solution

The fourth proportional to 10,217,115.20, 15,325,672.80 and 8,390,532.80 is: 12,585,799.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,217,115.20 : 15,325,672.80 = 8,390,532.80 : x
  2. Step 2: Convert to fraction form
    10,217,115.20/15,325,672.80 = 8,390,532.80/x
  3. Step 3: Cross multiply
    10,217,115.20x = 15,325,672.80 × 8,390,532.80
  4. Step 4: Simplify right side
    10,217,115.20x = 128,590,560,310,467.86
  5. Step 5: Solve for x
    x = 128,590,560,310,467.86/10,217,115.20
  6. Step 6: Final answer
    x = 12,585,799.20

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1.5x scale

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.