Home / 11,166.36-15,409.74-6,387.30

Finding the Fourth Proportional to 11,166.36, 15,409.74 and 6,387.30

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Solution

The fourth proportional to 11,166.36, 15,409.74 and 6,387.30 is: 8,814.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,166.36 : 15,409.74 = 6,387.30 : x
  2. Step 2: Convert to fraction form
    11,166.36/15,409.74 = 6,387.30/x
  3. Step 3: Cross multiply
    11,166.36x = 15,409.74 × 6,387.30
  4. Step 4: Simplify right side
    11,166.36x = 98,426,632.30
  5. Step 5: Solve for x
    x = 98,426,632.30/11,166.36
  6. Step 6: Final answer
    x = 8,814.57

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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.