Home / 31,043.09-42,838.99-18,294.26

Finding the Fourth Proportional to 31,043.09, 42,838.99 and 18,294.26

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Solution

The fourth proportional to 31,043.09, 42,838.99 and 18,294.26 is: 25,245.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,043.09 : 42,838.99 = 18,294.26 : x
  2. Step 2: Convert to fraction form
    31,043.09/42,838.99 = 18,294.26/x
  3. Step 3: Cross multiply
    31,043.09x = 42,838.99 × 18,294.26
  4. Step 4: Simplify right side
    31,043.09x = 783,707,361.27
  5. Step 5: Solve for x
    x = 783,707,361.27/31,043.09
  6. Step 6: Final answer
    x = 25,245.79

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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.