Home / 12,966.36-17,895.16-8,491.20

Finding the Fourth Proportional to 12,966.36, 17,895.16 and 8,491.20

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Solution

The fourth proportional to 12,966.36, 17,895.16 and 8,491.20 is: 11,718.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,966.36 : 17,895.16 = 8,491.20 : x
  2. Step 2: Convert to fraction form
    12,966.36/17,895.16 = 8,491.20/x
  3. Step 3: Cross multiply
    12,966.36x = 17,895.16 × 8,491.20
  4. Step 4: Simplify right side
    12,966.36x = 151,951,382.59
  5. Step 5: Solve for x
    x = 151,951,382.59/12,966.36
  6. Step 6: Final answer
    x = 11,718.89

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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.