Home / 10,535.54-15,803.30-3,139.80

Finding the Fourth Proportional to 10,535.54, 15,803.30 and 3,139.80

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Solution

The fourth proportional to 10,535.54, 15,803.30 and 3,139.80 is: 4,709.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,535.54 : 15,803.30 = 3,139.80 : x
  2. Step 2: Convert to fraction form
    10,535.54/15,803.30 = 3,139.80/x
  3. Step 3: Cross multiply
    10,535.54x = 15,803.30 × 3,139.80
  4. Step 4: Simplify right side
    10,535.54x = 49,619,201.34
  5. Step 5: Solve for x
    x = 49,619,201.34/10,535.54
  6. Step 6: Final answer
    x = 4,709.70

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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.