Home / 11,102.27-15,315.08-7,118.96

Finding the Fourth Proportional to 11,102.27, 15,315.08 and 7,118.96

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Solution

The fourth proportional to 11,102.27, 15,315.08 and 7,118.96 is: 9,820.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,102.27 : 15,315.08 = 7,118.96 : x
  2. Step 2: Convert to fraction form
    11,102.27/15,315.08 = 7,118.96/x
  3. Step 3: Cross multiply
    11,102.27x = 15,315.08 × 7,118.96
  4. Step 4: Simplify right side
    11,102.27x = 109,027,329.75
  5. Step 5: Solve for x
    x = 109,027,329.75/11,102.27
  6. Step 6: Final answer
    x = 9,820.28

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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.