Home / 15,215,325.08-20,999,301.68-9,415,974.56

Finding the Fourth Proportional to 15,215,325.08, 20,999,301.68 and 9,415,974.56

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Solution

The fourth proportional to 15,215,325.08, 20,999,301.68 and 9,415,974.56 is: 12,995,377.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,215,325.08 : 20,999,301.68 = 9,415,974.56 : x
  2. Step 2: Convert to fraction form
    15,215,325.08/20,999,301.68 = 9,415,974.56/x
  3. Step 3: Cross multiply
    15,215,325.08x = 20,999,301.68 × 9,415,974.56
  4. Step 4: Simplify right side
    15,215,325.08x = 197,728,890,396,645.28
  5. Step 5: Solve for x
    x = 197,728,890,396,645.28/15,215,325.08
  6. Step 6: Final answer
    x = 12,995,377.32

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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.