Home / 31,405.47-43,339.77-17,258.28

Finding the Fourth Proportional to 31,405.47, 43,339.77 and 17,258.28

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Solution

The fourth proportional to 31,405.47, 43,339.77 and 17,258.28 is: 23,816.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,405.47 : 43,339.77 = 17,258.28 : x
  2. Step 2: Convert to fraction form
    31,405.47/43,339.77 = 17,258.28/x
  3. Step 3: Cross multiply
    31,405.47x = 43,339.77 × 17,258.28
  4. Step 4: Simplify right side
    31,405.47x = 747,969,885.80
  5. Step 5: Solve for x
    x = 747,969,885.80/31,405.47
  6. Step 6: Final answer
    x = 23,816.55

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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.