Home / 11,434.37-15,780.24-6,399.08

Finding the Fourth Proportional to 11,434.37, 15,780.24 and 6,399.08

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Solution

The fourth proportional to 11,434.37, 15,780.24 and 6,399.08 is: 8,831.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,434.37 : 15,780.24 = 6,399.08 : x
  2. Step 2: Convert to fraction form
    11,434.37/15,780.24 = 6,399.08/x
  3. Step 3: Cross multiply
    11,434.37x = 15,780.24 × 6,399.08
  4. Step 4: Simplify right side
    11,434.37x = 100,979,018.18
  5. Step 5: Solve for x
    x = 100,979,018.18/11,434.37
  6. Step 6: Final answer
    x = 8,831.18

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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.