Home / 31,729.40-43,785.60-17,389.05

Finding the Fourth Proportional to 31,729.40, 43,785.60 and 17,389.05

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Solution

The fourth proportional to 31,729.40, 43,785.60 and 17,389.05 is: 23,996.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,729.40 : 43,785.60 = 17,389.05 : x
  2. Step 2: Convert to fraction form
    31,729.40/43,785.60 = 17,389.05/x
  3. Step 3: Cross multiply
    31,729.40x = 43,785.60 × 17,389.05
  4. Step 4: Simplify right side
    31,729.40x = 761,389,987.68
  5. Step 5: Solve for x
    x = 761,389,987.68/31,729.40
  6. Step 6: Final answer
    x = 23,996.36

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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.