Home / 11,112.91-15,339.68-6,399.07

Finding the Fourth Proportional to 11,112.91, 15,339.68 and 6,399.07

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Solution

The fourth proportional to 11,112.91, 15,339.68 and 6,399.07 is: 8,832.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,112.91 : 15,339.68 = 6,399.07 : x
  2. Step 2: Convert to fraction form
    11,112.91/15,339.68 = 6,399.07/x
  3. Step 3: Cross multiply
    11,112.91x = 15,339.68 × 6,399.07
  4. Step 4: Simplify right side
    11,112.91x = 98,159,686.10
  5. Step 5: Solve for x
    x = 98,159,686.10/11,112.91
  6. Step 6: Final answer
    x = 8,832.94

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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.