Home / 11,238.30-15,503.13-7,704.90

Finding the Fourth Proportional to 11,238.30, 15,503.13 and 7,704.90

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Solution

The fourth proportional to 11,238.30, 15,503.13 and 7,704.90 is: 10,628.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,238.30 : 15,503.13 = 7,704.90 : x
  2. Step 2: Convert to fraction form
    11,238.30/15,503.13 = 7,704.90/x
  3. Step 3: Cross multiply
    11,238.30x = 15,503.13 × 7,704.90
  4. Step 4: Simplify right side
    11,238.30x = 119,450,066.34
  5. Step 5: Solve for x
    x = 119,450,066.34/11,238.30
  6. Step 6: Final answer
    x = 10,628.84

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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.