Home / 19,165.78-28,775.40-15,219.46

Finding the Fourth Proportional to 19,165.78, 28,775.40 and 15,219.46

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Solution

The fourth proportional to 19,165.78, 28,775.40 and 15,219.46 is: 22,850.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,165.78 : 28,775.40 = 15,219.46 : x
  2. Step 2: Convert to fraction form
    19,165.78/28,775.40 = 15,219.46/x
  3. Step 3: Cross multiply
    19,165.78x = 28,775.40 × 15,219.46
  4. Step 4: Simplify right side
    19,165.78x = 437,946,049.28
  5. Step 5: Solve for x
    x = 437,946,049.28/19,165.78
  6. Step 6: Final answer
    x = 22,850.42

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1.5x scale

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.