Home / 31,843.72-43,913.91-21,657.16

Finding the Fourth Proportional to 31,843.72, 43,913.91 and 21,657.16

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Solution

The fourth proportional to 31,843.72, 43,913.91 and 21,657.16 is: 29,866.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,843.72 : 43,913.91 = 21,657.16 : x
  2. Step 2: Convert to fraction form
    31,843.72/43,913.91 = 21,657.16/x
  3. Step 3: Cross multiply
    31,843.72x = 43,913.91 × 21,657.16
  4. Step 4: Simplify right side
    31,843.72x = 951,050,575.10
  5. Step 5: Solve for x
    x = 951,050,575.10/31,843.72
  6. Step 6: Final answer
    x = 29,866.19

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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.