Home / 11,410.24-15,742.56-7,686.40

Finding the Fourth Proportional to 11,410.24, 15,742.56 and 7,686.40

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Solution

The fourth proportional to 11,410.24, 15,742.56 and 7,686.40 is: 10,604.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,410.24 : 15,742.56 = 7,686.40 : x
  2. Step 2: Convert to fraction form
    11,410.24/15,742.56 = 7,686.40/x
  3. Step 3: Cross multiply
    11,410.24x = 15,742.56 × 7,686.40
  4. Step 4: Simplify right side
    11,410.24x = 121,003,613.18
  5. Step 5: Solve for x
    x = 121,003,613.18/11,410.24
  6. Step 6: Final answer
    x = 10,604.83

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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.