Home / 31,355.42-43,271-17,209.58

Finding the Fourth Proportional to 31,355.42, 43,271 and 17,209.58

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Solution

The fourth proportional to 31,355.42, 43,271 and 17,209.58 is: 23,749.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,355.42 : 43,271 = 17,209.58 : x
  2. Step 2: Convert to fraction form
    31,355.42/43,271 = 17,209.58/x
  3. Step 3: Cross multiply
    31,355.42x = 43,271 × 17,209.58
  4. Step 4: Simplify right side
    31,355.42x = 744,675,736.18
  5. Step 5: Solve for x
    x = 744,675,736.18/31,355.42
  6. Step 6: Final answer
    x = 23,749.51

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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.