Home / 31,402.88-43,331.36-17,972

Finding the Fourth Proportional to 31,402.88, 43,331.36 and 17,972

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Solution

The fourth proportional to 31,402.88, 43,331.36 and 17,972 is: 24,798.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,402.88 : 43,331.36 = 17,972 : x
  2. Step 2: Convert to fraction form
    31,402.88/43,331.36 = 17,972/x
  3. Step 3: Cross multiply
    31,402.88x = 43,331.36 × 17,972
  4. Step 4: Simplify right side
    31,402.88x = 778,751,201.92
  5. Step 5: Solve for x
    x = 778,751,201.92/31,402.88
  6. Step 6: Final answer
    x = 24,798.72

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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.