Home / 28,175.78-38,883.79-15,600.53

Finding the Fourth Proportional to 28,175.78, 38,883.79 and 15,600.53

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Solution

The fourth proportional to 28,175.78, 38,883.79 and 15,600.53 is: 21,529.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,175.78 : 38,883.79 = 15,600.53 : x
  2. Step 2: Convert to fraction form
    28,175.78/38,883.79 = 15,600.53/x
  3. Step 3: Cross multiply
    28,175.78x = 38,883.79 × 15,600.53
  4. Step 4: Simplify right side
    28,175.78x = 606,607,732.41
  5. Step 5: Solve for x
    x = 606,607,732.41/28,175.78
  6. Step 6: Final answer
    x = 21,529.40

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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.