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Finding the Fourth Proportional to 12,831, 17,707.06 and 7,242.04

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Solution

The fourth proportional to 12,831, 17,707.06 and 7,242.04 is: 9,994.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,831 : 17,707.06 = 7,242.04 : x
  2. Step 2: Convert to fraction form
    12,831/17,707.06 = 7,242.04/x
  3. Step 3: Cross multiply
    12,831x = 17,707.06 × 7,242.04
  4. Step 4: Simplify right side
    12,831x = 128,235,236.80
  5. Step 5: Solve for x
    x = 128,235,236.80/12,831
  6. Step 6: Final answer
    x = 9,994.17

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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.