Home / 10,908.80-16,341.60-6,513.20

Finding the Fourth Proportional to 10,908.80, 16,341.60 and 6,513.20

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Solution

The fourth proportional to 10,908.80, 16,341.60 and 6,513.20 is: 9,756.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,908.80 : 16,341.60 = 6,513.20 : x
  2. Step 2: Convert to fraction form
    10,908.80/16,341.60 = 6,513.20/x
  3. Step 3: Cross multiply
    10,908.80x = 16,341.60 × 6,513.20
  4. Step 4: Simplify right side
    10,908.80x = 106,436,109.12
  5. Step 5: Solve for x
    x = 106,436,109.12/10,908.80
  6. Step 6: Final answer
    x = 9,756.90

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1.5x scale

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.