Home / 12,918.28-17,833.62-9,159.88

Finding the Fourth Proportional to 12,918.28, 17,833.62 and 9,159.88

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Solution

The fourth proportional to 12,918.28, 17,833.62 and 9,159.88 is: 12,645.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.28 : 17,833.62 = 9,159.88 : x
  2. Step 2: Convert to fraction form
    12,918.28/17,833.62 = 9,159.88/x
  3. Step 3: Cross multiply
    12,918.28x = 17,833.62 × 9,159.88
  4. Step 4: Simplify right side
    12,918.28x = 163,353,819.17
  5. Step 5: Solve for x
    x = 163,353,819.17/12,918.28
  6. Step 6: Final answer
    x = 12,645.17

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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.