Home / 12,918.12-17,836.92-9,389.76

Finding the Fourth Proportional to 12,918.12, 17,836.92 and 9,389.76

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Solution

The fourth proportional to 12,918.12, 17,836.92 and 9,389.76 is: 12,965.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.12 : 17,836.92 = 9,389.76 : x
  2. Step 2: Convert to fraction form
    12,918.12/17,836.92 = 9,389.76/x
  3. Step 3: Cross multiply
    12,918.12x = 17,836.92 × 9,389.76
  4. Step 4: Simplify right side
    12,918.12x = 167,484,397.94
  5. Step 5: Solve for x
    x = 167,484,397.94/12,918.12
  6. Step 6: Final answer
    x = 12,965.08

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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.