Home / 12,707.64-17,534.04-7,989.18

Finding the Fourth Proportional to 12,707.64, 17,534.04 and 7,989.18

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Solution

The fourth proportional to 12,707.64, 17,534.04 and 7,989.18 is: 11,023.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,707.64 : 17,534.04 = 7,989.18 : x
  2. Step 2: Convert to fraction form
    12,707.64/17,534.04 = 7,989.18/x
  3. Step 3: Cross multiply
    12,707.64x = 17,534.04 × 7,989.18
  4. Step 4: Simplify right side
    12,707.64x = 140,082,601.69
  5. Step 5: Solve for x
    x = 140,082,601.69/12,707.64
  6. Step 6: Final answer
    x = 11,023.49

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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.