Home / 18,915.17-28,347.59-10,028.66

Finding the Fourth Proportional to 18,915.17, 28,347.59 and 10,028.66

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Solution

The fourth proportional to 18,915.17, 28,347.59 and 10,028.66 is: 15,029.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915.17 : 28,347.59 = 10,028.66 : x
  2. Step 2: Convert to fraction form
    18,915.17/28,347.59 = 10,028.66/x
  3. Step 3: Cross multiply
    18,915.17x = 28,347.59 × 10,028.66
  4. Step 4: Simplify right side
    18,915.17x = 284,288,150.05
  5. Step 5: Solve for x
    x = 284,288,150.05/18,915.17
  6. Step 6: Final answer
    x = 15,029.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.