Home / 31,405.67-43,339.80-17,258.51

Finding the Fourth Proportional to 31,405.67, 43,339.80 and 17,258.51

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Solution

The fourth proportional to 31,405.67, 43,339.80 and 17,258.51 is: 23,816.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,405.67 : 43,339.80 = 17,258.51 : x
  2. Step 2: Convert to fraction form
    31,405.67/43,339.80 = 17,258.51/x
  3. Step 3: Cross multiply
    31,405.67x = 43,339.80 × 17,258.51
  4. Step 4: Simplify right side
    31,405.67x = 747,980,480.05
  5. Step 5: Solve for x
    x = 747,980,480.05/31,405.67
  6. Step 6: Final answer
    x = 23,816.74

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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.