Home / 31,388.72-43,319.48-17,961.89

Finding the Fourth Proportional to 31,388.72, 43,319.48 and 17,961.89

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Solution

The fourth proportional to 31,388.72, 43,319.48 and 17,961.89 is: 24,789.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,388.72 : 43,319.48 = 17,961.89 : x
  2. Step 2: Convert to fraction form
    31,388.72/43,319.48 = 17,961.89/x
  3. Step 3: Cross multiply
    31,388.72x = 43,319.48 × 17,961.89
  4. Step 4: Simplify right side
    31,388.72x = 778,099,428.21
  5. Step 5: Solve for x
    x = 778,099,428.21/31,388.72
  6. Step 6: Final answer
    x = 24,789.15

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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.