Home / 11,443.06-15,789.36-6,407.43

Finding the Fourth Proportional to 11,443.06, 15,789.36 and 6,407.43

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Solution

The fourth proportional to 11,443.06, 15,789.36 and 6,407.43 is: 8,841.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,443.06 : 15,789.36 = 6,407.43 : x
  2. Step 2: Convert to fraction form
    11,443.06/15,789.36 = 6,407.43/x
  3. Step 3: Cross multiply
    11,443.06x = 15,789.36 × 6,407.43
  4. Step 4: Simplify right side
    11,443.06x = 101,169,218.94
  5. Step 5: Solve for x
    x = 101,169,218.94/11,443.06
  6. Step 6: Final answer
    x = 8,841.10

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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.