Home / 10,929.08-16,402.20-7,620.64

Finding the Fourth Proportional to 10,929.08, 16,402.20 and 7,620.64

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Solution

The fourth proportional to 10,929.08, 16,402.20 and 7,620.64 is: 11,436.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,929.08 : 16,402.20 = 7,620.64 : x
  2. Step 2: Convert to fraction form
    10,929.08/16,402.20 = 7,620.64/x
  3. Step 3: Cross multiply
    10,929.08x = 16,402.20 × 7,620.64
  4. Step 4: Simplify right side
    10,929.08x = 124,995,220.40
  5. Step 5: Solve for x
    x = 124,995,220.40/10,929.08
  6. Step 6: Final answer
    x = 11,436.94

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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.