Home / 30,687.41-42,348.23-17,258.66

Finding the Fourth Proportional to 30,687.41, 42,348.23 and 17,258.66

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Solution

The fourth proportional to 30,687.41, 42,348.23 and 17,258.66 is: 23,816.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,687.41 : 42,348.23 = 17,258.66 : x
  2. Step 2: Convert to fraction form
    30,687.41/42,348.23 = 17,258.66/x
  3. Step 3: Cross multiply
    30,687.41x = 42,348.23 × 17,258.66
  4. Step 4: Simplify right side
    30,687.41x = 730,873,405.14
  5. Step 5: Solve for x
    x = 730,873,405.14/30,687.41
  6. Step 6: Final answer
    x = 23,816.72

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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.