Home / 31,638.97-43,663.69-18,209.93

Finding the Fourth Proportional to 31,638.97, 43,663.69 and 18,209.93

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Solution

The fourth proportional to 31,638.97, 43,663.69 and 18,209.93 is: 25,130.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,638.97 : 43,663.69 = 18,209.93 : x
  2. Step 2: Convert to fraction form
    31,638.97/43,663.69 = 18,209.93/x
  3. Step 3: Cross multiply
    31,638.97x = 43,663.69 × 18,209.93
  4. Step 4: Simplify right side
    31,638.97x = 795,112,788.49
  5. Step 5: Solve for x
    x = 795,112,788.49/31,638.97
  6. Step 6: Final answer
    x = 25,130.80

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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.