Home / 28,259.84-38,997.44-15,685.44

Finding the Fourth Proportional to 28,259.84, 38,997.44 and 15,685.44

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Solution

The fourth proportional to 28,259.84, 38,997.44 and 15,685.44 is: 21,645.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,259.84 : 38,997.44 = 15,685.44 : x
  2. Step 2: Convert to fraction form
    28,259.84/38,997.44 = 15,685.44/x
  3. Step 3: Cross multiply
    28,259.84x = 38,997.44 × 15,685.44
  4. Step 4: Simplify right side
    28,259.84x = 611,692,005.27
  5. Step 5: Solve for x
    x = 611,692,005.27/28,259.84
  6. Step 6: Final answer
    x = 21,645.27

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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.