Home / 31,434.36-43,378.55-17,287.21

Finding the Fourth Proportional to 31,434.36, 43,378.55 and 17,287.21

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Solution

The fourth proportional to 31,434.36, 43,378.55 and 17,287.21 is: 23,855.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,434.36 : 43,378.55 = 17,287.21 : x
  2. Step 2: Convert to fraction form
    31,434.36/43,378.55 = 17,287.21/x
  3. Step 3: Cross multiply
    31,434.36x = 43,378.55 × 17,287.21
  4. Step 4: Simplify right side
    31,434.36x = 749,893,989.20
  5. Step 5: Solve for x
    x = 749,893,989.20/31,434.36
  6. Step 6: Final answer
    x = 23,855.87

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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.