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Finding the Fourth Proportional to 11,862.72, 17,804.86 and 6,320.80

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Solution

The fourth proportional to 11,862.72, 17,804.86 and 6,320.80 is: 9,486.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,862.72 : 17,804.86 = 6,320.80 : x
  2. Step 2: Convert to fraction form
    11,862.72/17,804.86 = 6,320.80/x
  3. Step 3: Cross multiply
    11,862.72x = 17,804.86 × 6,320.80
  4. Step 4: Simplify right side
    11,862.72x = 112,540,959.09
  5. Step 5: Solve for x
    x = 112,540,959.09/11,862.72
  6. Step 6: Final answer
    x = 9,486.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.