Home / 10,121.84-15,184.37-4,278.50

Finding the Fourth Proportional to 10,121.84, 15,184.37 and 4,278.50

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Solution

The fourth proportional to 10,121.84, 15,184.37 and 4,278.50 is: 6,418.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.84 : 15,184.37 = 4,278.50 : x
  2. Step 2: Convert to fraction form
    10,121.84/15,184.37 = 4,278.50/x
  3. Step 3: Cross multiply
    10,121.84x = 15,184.37 × 4,278.50
  4. Step 4: Simplify right side
    10,121.84x = 64,966,327.05
  5. Step 5: Solve for x
    x = 64,966,327.05/10,121.84
  6. Step 6: Final answer
    x = 6,418.43

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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.