Home / 11,392.36-15,707.46-8,247.40

Finding the Fourth Proportional to 11,392.36, 15,707.46 and 8,247.40

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Solution

The fourth proportional to 11,392.36, 15,707.46 and 8,247.40 is: 11,371.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,392.36 : 15,707.46 = 8,247.40 : x
  2. Step 2: Convert to fraction form
    11,392.36/15,707.46 = 8,247.40/x
  3. Step 3: Cross multiply
    11,392.36x = 15,707.46 × 8,247.40
  4. Step 4: Simplify right side
    11,392.36x = 129,545,705.60
  5. Step 5: Solve for x
    x = 129,545,705.60/11,392.36
  6. Step 6: Final answer
    x = 11,371.28

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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.