Home / 10,200.78-15,299.43-2,803.50

Finding the Fourth Proportional to 10,200.78, 15,299.43 and 2,803.50

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Solution

The fourth proportional to 10,200.78, 15,299.43 and 2,803.50 is: 4,204.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,200.78 : 15,299.43 = 2,803.50 : x
  2. Step 2: Convert to fraction form
    10,200.78/15,299.43 = 2,803.50/x
  3. Step 3: Cross multiply
    10,200.78x = 15,299.43 × 2,803.50
  4. Step 4: Simplify right side
    10,200.78x = 42,891,952.01
  5. Step 5: Solve for x
    x = 42,891,952.01/10,200.78
  6. Step 6: Final answer
    x = 4,204.77

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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.