Home / 31,287.52-43,176.80-17,140.36

Finding the Fourth Proportional to 31,287.52, 43,176.80 and 17,140.36

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Solution

The fourth proportional to 31,287.52, 43,176.80 and 17,140.36 is: 23,653.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,287.52 : 43,176.80 = 17,140.36 : x
  2. Step 2: Convert to fraction form
    31,287.52/43,176.80 = 17,140.36/x
  3. Step 3: Cross multiply
    31,287.52x = 43,176.80 × 17,140.36
  4. Step 4: Simplify right side
    31,287.52x = 740,065,815.10
  5. Step 5: Solve for x
    x = 740,065,815.10/31,287.52
  6. Step 6: Final answer
    x = 23,653.71

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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.