Home / 11,105.88-15,331.50-7,133.74

Finding the Fourth Proportional to 11,105.88, 15,331.50 and 7,133.74

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Solution

The fourth proportional to 11,105.88, 15,331.50 and 7,133.74 is: 9,848.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,105.88 : 15,331.50 = 7,133.74 : x
  2. Step 2: Convert to fraction form
    11,105.88/15,331.50 = 7,133.74/x
  3. Step 3: Cross multiply
    11,105.88x = 15,331.50 × 7,133.74
  4. Step 4: Simplify right side
    11,105.88x = 109,370,934.81
  5. Step 5: Solve for x
    x = 109,370,934.81/11,105.88
  6. Step 6: Final answer
    x = 9,848.02

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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.