Home / 15,451.21-21,322.65-8,377.62

Finding the Fourth Proportional to 15,451.21, 21,322.65 and 8,377.62

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Solution

The fourth proportional to 15,451.21, 21,322.65 and 8,377.62 is: 11,561.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,451.21 : 21,322.65 = 8,377.62 : x
  2. Step 2: Convert to fraction form
    15,451.21/21,322.65 = 8,377.62/x
  3. Step 3: Cross multiply
    15,451.21x = 21,322.65 × 8,377.62
  4. Step 4: Simplify right side
    15,451.21x = 178,633,059.09
  5. Step 5: Solve for x
    x = 178,633,059.09/15,451.21
  6. Step 6: Final answer
    x = 11,561.10

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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.