Home / 11,122.99-15,355.28-6,406.36

Finding the Fourth Proportional to 11,122.99, 15,355.28 and 6,406.36

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Solution

The fourth proportional to 11,122.99, 15,355.28 and 6,406.36 is: 8,843.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,122.99 : 15,355.28 = 6,406.36 : x
  2. Step 2: Convert to fraction form
    11,122.99/15,355.28 = 6,406.36/x
  3. Step 3: Cross multiply
    11,122.99x = 15,355.28 × 6,406.36
  4. Step 4: Simplify right side
    11,122.99x = 98,371,451.58
  5. Step 5: Solve for x
    x = 98,371,451.58/11,122.99
  6. Step 6: Final answer
    x = 8,843.98

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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.