Home / 11,121.16-15,346.20-6,404.80

Finding the Fourth Proportional to 11,121.16, 15,346.20 and 6,404.80

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Solution

The fourth proportional to 11,121.16, 15,346.20 and 6,404.80 is: 8,838.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.16 : 15,346.20 = 6,404.80 : x
  2. Step 2: Convert to fraction form
    11,121.16/15,346.20 = 6,404.80/x
  3. Step 3: Cross multiply
    11,121.16x = 15,346.20 × 6,404.80
  4. Step 4: Simplify right side
    11,121.16x = 98,289,341.76
  5. Step 5: Solve for x
    x = 98,289,341.76/11,121.16
  6. Step 6: Final answer
    x = 8,838.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.