Home / 31,452.18-43,357.05-20,823.36

Finding the Fourth Proportional to 31,452.18, 43,357.05 and 20,823.36

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Solution

The fourth proportional to 31,452.18, 43,357.05 and 20,823.36 is: 28,705.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,452.18 : 43,357.05 = 20,823.36 : x
  2. Step 2: Convert to fraction form
    31,452.18/43,357.05 = 20,823.36/x
  3. Step 3: Cross multiply
    31,452.18x = 43,357.05 × 20,823.36
  4. Step 4: Simplify right side
    31,452.18x = 902,839,460.69
  5. Step 5: Solve for x
    x = 902,839,460.69/31,452.18
  6. Step 6: Final answer
    x = 28,705.15

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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.