Home / 13,657.29-18,844.70-8,612.79

Finding the Fourth Proportional to 13,657.29, 18,844.70 and 8,612.79

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Solution

The fourth proportional to 13,657.29, 18,844.70 and 8,612.79 is: 11,884.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,657.29 : 18,844.70 = 8,612.79 : x
  2. Step 2: Convert to fraction form
    13,657.29/18,844.70 = 8,612.79/x
  3. Step 3: Cross multiply
    13,657.29x = 18,844.70 × 8,612.79
  4. Step 4: Simplify right side
    13,657.29x = 162,305,400.65
  5. Step 5: Solve for x
    x = 162,305,400.65/13,657.29
  6. Step 6: Final answer
    x = 11,884.16

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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.