Home / 12,742.92-17,586.86-7,707.18

Finding the Fourth Proportional to 12,742.92, 17,586.86 and 7,707.18

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Solution

The fourth proportional to 12,742.92, 17,586.86 and 7,707.18 is: 10,636.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,742.92 : 17,586.86 = 7,707.18 : x
  2. Step 2: Convert to fraction form
    12,742.92/17,586.86 = 7,707.18/x
  3. Step 3: Cross multiply
    12,742.92x = 17,586.86 × 7,707.18
  4. Step 4: Simplify right side
    12,742.92x = 135,545,057.12
  5. Step 5: Solve for x
    x = 135,545,057.12/12,742.92
  6. Step 6: Final answer
    x = 10,636.89

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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.