Home / 11,523.12-17,281.80-3,315.12

Finding the Fourth Proportional to 11,523.12, 17,281.80 and 3,315.12

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Solution

The fourth proportional to 11,523.12, 17,281.80 and 3,315.12 is: 4,971.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,523.12 : 17,281.80 = 3,315.12 : x
  2. Step 2: Convert to fraction form
    11,523.12/17,281.80 = 3,315.12/x
  3. Step 3: Cross multiply
    11,523.12x = 17,281.80 × 3,315.12
  4. Step 4: Simplify right side
    11,523.12x = 57,291,240.82
  5. Step 5: Solve for x
    x = 57,291,240.82/11,523.12
  6. Step 6: Final answer
    x = 4,971.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.