Home / 13,309,857.12-18,367,615.16-7,198,285.60

Finding the Fourth Proportional to 13,309,857.12, 18,367,615.16 and 7,198,285.60

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Solution

The fourth proportional to 13,309,857.12, 18,367,615.16 and 7,198,285.60 is: 9,933,640.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309,857.12 : 18,367,615.16 = 7,198,285.60 : x
  2. Step 2: Convert to fraction form
    13,309,857.12/18,367,615.16 = 7,198,285.60/x
  3. Step 3: Cross multiply
    13,309,857.12x = 18,367,615.16 × 7,198,285.60
  4. Step 4: Simplify right side
    13,309,857.12x = 132,215,339,712,569.69
  5. Step 5: Solve for x
    x = 132,215,339,712,569.69/13,309,857.12
  6. Step 6: Final answer
    x = 9,933,640.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.