Home / 31,672.05-43,712.79-18,240.84

Finding the Fourth Proportional to 31,672.05, 43,712.79 and 18,240.84

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Solution

The fourth proportional to 31,672.05, 43,712.79 and 18,240.84 is: 25,175.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,672.05 : 43,712.79 = 18,240.84 : x
  2. Step 2: Convert to fraction form
    31,672.05/43,712.79 = 18,240.84/x
  3. Step 3: Cross multiply
    31,672.05x = 43,712.79 × 18,240.84
  4. Step 4: Simplify right side
    31,672.05x = 797,358,008.34
  5. Step 5: Solve for x
    x = 797,358,008.34/31,672.05
  6. Step 6: Final answer
    x = 25,175.45

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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.