Home / 15,428.44-21,291.15-8,354.85

Finding the Fourth Proportional to 15,428.44, 21,291.15 and 8,354.85

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Solution

The fourth proportional to 15,428.44, 21,291.15 and 8,354.85 is: 11,529.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,428.44 : 21,291.15 = 8,354.85 : x
  2. Step 2: Convert to fraction form
    15,428.44/21,291.15 = 8,354.85/x
  3. Step 3: Cross multiply
    15,428.44x = 21,291.15 × 8,354.85
  4. Step 4: Simplify right side
    15,428.44x = 177,884,364.58
  5. Step 5: Solve for x
    x = 177,884,364.58/15,428.44
  6. Step 6: Final answer
    x = 11,529.64

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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.