Home / 11,131.98-15,343.47-8,886.66

Finding the Fourth Proportional to 11,131.98, 15,343.47 and 8,886.66

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Solution

The fourth proportional to 11,131.98, 15,343.47 and 8,886.66 is: 12,248.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,131.98 : 15,343.47 = 8,886.66 : x
  2. Step 2: Convert to fraction form
    11,131.98/15,343.47 = 8,886.66/x
  3. Step 3: Cross multiply
    11,131.98x = 15,343.47 × 8,886.66
  4. Step 4: Simplify right side
    11,131.98x = 136,352,201.11
  5. Step 5: Solve for x
    x = 136,352,201.11/11,131.98
  6. Step 6: Final answer
    x = 12,248.69

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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.