Home / 11,150.30-15,378.86-8,165.06

Finding the Fourth Proportional to 11,150.30, 15,378.86 and 8,165.06

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Solution

The fourth proportional to 11,150.30, 15,378.86 and 8,165.06 is: 11,261.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,150.30 : 15,378.86 = 8,165.06 : x
  2. Step 2: Convert to fraction form
    11,150.30/15,378.86 = 8,165.06/x
  3. Step 3: Cross multiply
    11,150.30x = 15,378.86 × 8,165.06
  4. Step 4: Simplify right side
    11,150.30x = 125,569,314.63
  5. Step 5: Solve for x
    x = 125,569,314.63/11,150.30
  6. Step 6: Final answer
    x = 11,261.52

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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.