Home / 11,087.35-15,303.11-7,311.20

Finding the Fourth Proportional to 11,087.35, 15,303.11 and 7,311.20

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Solution

The fourth proportional to 11,087.35, 15,303.11 and 7,311.20 is: 10,091.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,087.35 : 15,303.11 = 7,311.20 : x
  2. Step 2: Convert to fraction form
    11,087.35/15,303.11 = 7,311.20/x
  3. Step 3: Cross multiply
    11,087.35x = 15,303.11 × 7,311.20
  4. Step 4: Simplify right side
    11,087.35x = 111,883,984.76
  5. Step 5: Solve for x
    x = 111,883,984.76/11,087.35
  6. Step 6: Final answer
    x = 10,091.14

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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.