Home / 31,421.25-43,361.40-17,274.20

Finding the Fourth Proportional to 31,421.25, 43,361.40 and 17,274.20

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Solution

The fourth proportional to 31,421.25, 43,361.40 and 17,274.20 is: 23,838.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,421.25 : 43,361.40 = 17,274.20 : x
  2. Step 2: Convert to fraction form
    31,421.25/43,361.40 = 17,274.20/x
  3. Step 3: Cross multiply
    31,421.25x = 43,361.40 × 17,274.20
  4. Step 4: Simplify right side
    31,421.25x = 749,033,279.07
  5. Step 5: Solve for x
    x = 749,033,279.07/31,421.25
  6. Step 6: Final answer
    x = 23,838.43

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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.