Home / 28,761.88-39,703.63-19,335.91

Finding the Fourth Proportional to 28,761.88, 39,703.63 and 19,335.91

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Solution

The fourth proportional to 28,761.88, 39,703.63 and 19,335.91 is: 26,691.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,761.88 : 39,703.63 = 19,335.91 : x
  2. Step 2: Convert to fraction form
    28,761.88/39,703.63 = 19,335.91/x
  3. Step 3: Cross multiply
    28,761.88x = 39,703.63 × 19,335.91
  4. Step 4: Simplify right side
    28,761.88x = 767,705,617.84
  5. Step 5: Solve for x
    x = 767,705,617.84/28,761.88
  6. Step 6: Final answer
    x = 26,691.78

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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.