Home / 31,386.63-43,313.85-17,239.78

Finding the Fourth Proportional to 31,386.63, 43,313.85 and 17,239.78

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Solution

The fourth proportional to 31,386.63, 43,313.85 and 17,239.78 is: 23,791.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,386.63 : 43,313.85 = 17,239.78 : x
  2. Step 2: Convert to fraction form
    31,386.63/43,313.85 = 17,239.78/x
  3. Step 3: Cross multiply
    31,386.63x = 43,313.85 × 17,239.78
  4. Step 4: Simplify right side
    31,386.63x = 746,721,244.95
  5. Step 5: Solve for x
    x = 746,721,244.95/31,386.63
  6. Step 6: Final answer
    x = 23,791.06

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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.