Home / 11,151.13-15,388.54-6,435.41

Finding the Fourth Proportional to 11,151.13, 15,388.54 and 6,435.41

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Solution

The fourth proportional to 11,151.13, 15,388.54 and 6,435.41 is: 8,880.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,151.13 : 15,388.54 = 6,435.41 : x
  2. Step 2: Convert to fraction form
    11,151.13/15,388.54 = 6,435.41/x
  3. Step 3: Cross multiply
    11,151.13x = 15,388.54 × 6,435.41
  4. Step 4: Simplify right side
    11,151.13x = 99,031,500.02
  5. Step 5: Solve for x
    x = 99,031,500.02/11,151.13
  6. Step 6: Final answer
    x = 8,880.85

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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.