Home / 11,959.28-16,515.64-9,855.66

Finding the Fourth Proportional to 11,959.28, 16,515.64 and 9,855.66

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Solution

The fourth proportional to 11,959.28, 16,515.64 and 9,855.66 is: 13,610.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,959.28 : 16,515.64 = 9,855.66 : x
  2. Step 2: Convert to fraction form
    11,959.28/16,515.64 = 9,855.66/x
  3. Step 3: Cross multiply
    11,959.28x = 16,515.64 × 9,855.66
  4. Step 4: Simplify right side
    11,959.28x = 162,772,532.52
  5. Step 5: Solve for x
    x = 162,772,532.52/11,959.28
  6. Step 6: Final answer
    x = 13,610.56

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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.