Home / 11,164.48-15,398.19-9,889.72

Finding the Fourth Proportional to 11,164.48, 15,398.19 and 9,889.72

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Solution

The fourth proportional to 11,164.48, 15,398.19 and 9,889.72 is: 13,640.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,164.48 : 15,398.19 = 9,889.72 : x
  2. Step 2: Convert to fraction form
    11,164.48/15,398.19 = 9,889.72/x
  3. Step 3: Cross multiply
    11,164.48x = 15,398.19 × 9,889.72
  4. Step 4: Simplify right side
    11,164.48x = 152,283,787.61
  5. Step 5: Solve for x
    x = 152,283,787.61/11,164.48
  6. Step 6: Final answer
    x = 13,640.03

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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.