Home / 31,711.75-43,759.06-18,962.39

Finding the Fourth Proportional to 31,711.75, 43,759.06 and 18,962.39

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Solution

The fourth proportional to 31,711.75, 43,759.06 and 18,962.39 is: 26,166.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,711.75 : 43,759.06 = 18,962.39 : x
  2. Step 2: Convert to fraction form
    31,711.75/43,759.06 = 18,962.39/x
  3. Step 3: Cross multiply
    31,711.75x = 43,759.06 × 18,962.39
  4. Step 4: Simplify right side
    31,711.75x = 829,776,423.75
  5. Step 5: Solve for x
    x = 829,776,423.75/31,711.75
  6. Step 6: Final answer
    x = 26,166.22

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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.