Home / 31,396.02-43,337.88-20,789.07

Finding the Fourth Proportional to 31,396.02, 43,337.88 and 20,789.07

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Solution

The fourth proportional to 31,396.02, 43,337.88 and 20,789.07 is: 28,696.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,396.02 : 43,337.88 = 20,789.07 : x
  2. Step 2: Convert to fraction form
    31,396.02/43,337.88 = 20,789.07/x
  3. Step 3: Cross multiply
    31,396.02x = 43,337.88 × 20,789.07
  4. Step 4: Simplify right side
    31,396.02x = 900,954,220.97
  5. Step 5: Solve for x
    x = 900,954,220.97/31,396.02
  6. Step 6: Final answer
    x = 28,696.45

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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.