Home / 28,256.72-38,997.60-15,682.28

Finding the Fourth Proportional to 28,256.72, 38,997.60 and 15,682.28

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Solution

The fourth proportional to 28,256.72, 38,997.60 and 15,682.28 is: 21,643.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,256.72 : 38,997.60 = 15,682.28 : x
  2. Step 2: Convert to fraction form
    28,256.72/38,997.60 = 15,682.28/x
  3. Step 3: Cross multiply
    28,256.72x = 38,997.60 × 15,682.28
  4. Step 4: Simplify right side
    28,256.72x = 611,571,282.53
  5. Step 5: Solve for x
    x = 611,571,282.53/28,256.72
  6. Step 6: Final answer
    x = 21,643.39

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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.