Home / 12,240.67-18,357.90-5,216.80

Finding the Fourth Proportional to 12,240.67, 18,357.90 and 5,216.80

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Solution

The fourth proportional to 12,240.67, 18,357.90 and 5,216.80 is: 7,823.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240.67 : 18,357.90 = 5,216.80 : x
  2. Step 2: Convert to fraction form
    12,240.67/18,357.90 = 5,216.80/x
  3. Step 3: Cross multiply
    12,240.67x = 18,357.90 × 5,216.80
  4. Step 4: Simplify right side
    12,240.67x = 95,769,492.72
  5. Step 5: Solve for x
    x = 95,769,492.72/12,240.67
  6. Step 6: Final answer
    x = 7,823.88

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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.