Home / 10,938.08-16,405.44-5,389.88

Finding the Fourth Proportional to 10,938.08, 16,405.44 and 5,389.88

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Solution

The fourth proportional to 10,938.08, 16,405.44 and 5,389.88 is: 8,083.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,938.08 : 16,405.44 = 5,389.88 : x
  2. Step 2: Convert to fraction form
    10,938.08/16,405.44 = 5,389.88/x
  3. Step 3: Cross multiply
    10,938.08x = 16,405.44 × 5,389.88
  4. Step 4: Simplify right side
    10,938.08x = 88,423,352.95
  5. Step 5: Solve for x
    x = 88,423,352.95/10,938.08
  6. Step 6: Final answer
    x = 8,083.99

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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.