Home / 31,731.91-43,792.76-18,307.60

Finding the Fourth Proportional to 31,731.91, 43,792.76 and 18,307.60

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Solution

The fourth proportional to 31,731.91, 43,792.76 and 18,307.60 is: 25,266.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,731.91 : 43,792.76 = 18,307.60 : x
  2. Step 2: Convert to fraction form
    31,731.91/43,792.76 = 18,307.60/x
  3. Step 3: Cross multiply
    31,731.91x = 43,792.76 × 18,307.60
  4. Step 4: Simplify right side
    31,731.91x = 801,740,269.26
  5. Step 5: Solve for x
    x = 801,740,269.26/31,731.91
  6. Step 6: Final answer
    x = 25,266.06

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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.