Home / 11,621.60-17,402.88-6,421.76

Finding the Fourth Proportional to 11,621.60, 17,402.88 and 6,421.76

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Solution

The fourth proportional to 11,621.60, 17,402.88 and 6,421.76 is: 9,616.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,621.60 : 17,402.88 = 6,421.76 : x
  2. Step 2: Convert to fraction form
    11,621.60/17,402.88 = 6,421.76/x
  3. Step 3: Cross multiply
    11,621.60x = 17,402.88 × 6,421.76
  4. Step 4: Simplify right side
    11,621.60x = 111,757,118.67
  5. Step 5: Solve for x
    x = 111,757,118.67/11,621.60
  6. Step 6: Final answer
    x = 9,616.33

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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.