Home / 28,335.88-39,111.75-18,904.42

Finding the Fourth Proportional to 28,335.88, 39,111.75 and 18,904.42

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Solution

The fourth proportional to 28,335.88, 39,111.75 and 18,904.42 is: 26,093.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,335.88 : 39,111.75 = 18,904.42 : x
  2. Step 2: Convert to fraction form
    28,335.88/39,111.75 = 18,904.42/x
  3. Step 3: Cross multiply
    28,335.88x = 39,111.75 × 18,904.42
  4. Step 4: Simplify right side
    28,335.88x = 739,384,948.94
  5. Step 5: Solve for x
    x = 739,384,948.94/28,335.88
  6. Step 6: Final answer
    x = 26,093.59

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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.