Home / 10,443.03-15,665.21-3,421.16

Finding the Fourth Proportional to 10,443.03, 15,665.21 and 3,421.16

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Solution

The fourth proportional to 10,443.03, 15,665.21 and 3,421.16 is: 5,131.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,443.03 : 15,665.21 = 3,421.16 : x
  2. Step 2: Convert to fraction form
    10,443.03/15,665.21 = 3,421.16/x
  3. Step 3: Cross multiply
    10,443.03x = 15,665.21 × 3,421.16
  4. Step 4: Simplify right side
    10,443.03x = 53,593,094.41
  5. Step 5: Solve for x
    x = 53,593,094.41/10,443.03
  6. Step 6: Final answer
    x = 5,131.95

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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.