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Finding the Fourth Proportional to 12,036.40, 16,610.06 and 6,731.20

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Solution

The fourth proportional to 12,036.40, 16,610.06 and 6,731.20 is: 9,288.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,036.40 : 16,610.06 = 6,731.20 : x
  2. Step 2: Convert to fraction form
    12,036.40/16,610.06 = 6,731.20/x
  3. Step 3: Cross multiply
    12,036.40x = 16,610.06 × 6,731.20
  4. Step 4: Simplify right side
    12,036.40x = 111,805,673.46
  5. Step 5: Solve for x
    x = 111,805,673.46/12,036.40
  6. Step 6: Final answer
    x = 9,288.96

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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.