Home / 15,451.11-21,322.53-8,377.56

Finding the Fourth Proportional to 15,451.11, 21,322.53 and 8,377.56

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Solution

The fourth proportional to 15,451.11, 21,322.53 and 8,377.56 is: 11,561.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,451.11 : 21,322.53 = 8,377.56 : x
  2. Step 2: Convert to fraction form
    15,451.11/21,322.53 = 8,377.56/x
  3. Step 3: Cross multiply
    15,451.11x = 21,322.53 × 8,377.56
  4. Step 4: Simplify right side
    15,451.11x = 178,630,774.43
  5. Step 5: Solve for x
    x = 178,630,774.43/15,451.11
  6. Step 6: Final answer
    x = 11,561.03

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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.