Home / 8,223,739.20-12,307,615.20-7,215,969.60

Finding the Fourth Proportional to 8,223,739.20, 12,307,615.20 and 7,215,969.60

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Solution

The fourth proportional to 8,223,739.20, 12,307,615.20 and 7,215,969.60 is: 10,799,391.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,223,739.20 : 12,307,615.20 = 7,215,969.60 : x
  2. Step 2: Convert to fraction form
    8,223,739.20/12,307,615.20 = 7,215,969.60/x
  3. Step 3: Cross multiply
    8,223,739.20x = 12,307,615.20 × 7,215,969.60
  4. Step 4: Simplify right side
    8,223,739.20x = 88,811,377,131,697.91
  5. Step 5: Solve for x
    x = 88,811,377,131,697.91/8,223,739.20
  6. Step 6: Final answer
    x = 10,799,391.25

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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.