Home / 31,386.90-43,314.18-17,240.06

Finding the Fourth Proportional to 31,386.90, 43,314.18 and 17,240.06

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Solution

The fourth proportional to 31,386.90, 43,314.18 and 17,240.06 is: 23,791.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,386.90 : 43,314.18 = 17,240.06 : x
  2. Step 2: Convert to fraction form
    31,386.90/43,314.18 = 17,240.06/x
  3. Step 3: Cross multiply
    31,386.90x = 43,314.18 × 17,240.06
  4. Step 4: Simplify right side
    31,386.90x = 746,739,062.05
  5. Step 5: Solve for x
    x = 746,739,062.05/31,386.90
  6. Step 6: Final answer
    x = 23,791.42

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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.