Home / 31,287.04-43,176.26-17,139.88

Finding the Fourth Proportional to 31,287.04, 43,176.26 and 17,139.88

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Solution

The fourth proportional to 31,287.04, 43,176.26 and 17,139.88 is: 23,653.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,287.04 : 43,176.26 = 17,139.88 : x
  2. Step 2: Convert to fraction form
    31,287.04/43,176.26 = 17,139.88/x
  3. Step 3: Cross multiply
    31,287.04x = 43,176.26 × 17,139.88
  4. Step 4: Simplify right side
    31,287.04x = 740,035,915.25
  5. Step 5: Solve for x
    x = 740,035,915.25/31,287.04
  6. Step 6: Final answer
    x = 23,653.12

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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.