Home / 31,728.04-43,764.82-20,412.26

Finding the Fourth Proportional to 31,728.04, 43,764.82 and 20,412.26

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Solution

The fourth proportional to 31,728.04, 43,764.82 and 20,412.26 is: 28,156.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,728.04 : 43,764.82 = 20,412.26 : x
  2. Step 2: Convert to fraction form
    31,728.04/43,764.82 = 20,412.26/x
  3. Step 3: Cross multiply
    31,728.04x = 43,764.82 × 20,412.26
  4. Step 4: Simplify right side
    31,728.04x = 893,338,884.69
  5. Step 5: Solve for x
    x = 893,338,884.69/31,728.04
  6. Step 6: Final answer
    x = 28,156.13

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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.