Home / 10,555.18-15,835.11-3,981.43

Finding the Fourth Proportional to 10,555.18, 15,835.11 and 3,981.43

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Solution

The fourth proportional to 10,555.18, 15,835.11 and 3,981.43 is: 5,973.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,555.18 : 15,835.11 = 3,981.43 : x
  2. Step 2: Convert to fraction form
    10,555.18/15,835.11 = 3,981.43/x
  3. Step 3: Cross multiply
    10,555.18x = 15,835.11 × 3,981.43
  4. Step 4: Simplify right side
    10,555.18x = 63,046,382.01
  5. Step 5: Solve for x
    x = 63,046,382.01/10,555.18
  6. Step 6: Final answer
    x = 5,973.03

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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.