Home / 15,396.26-21,246.85-9,021.58

Finding the Fourth Proportional to 15,396.26, 21,246.85 and 9,021.58

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Solution

The fourth proportional to 15,396.26, 21,246.85 and 9,021.58 is: 12,449.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,396.26 : 21,246.85 = 9,021.58 : x
  2. Step 2: Convert to fraction form
    15,396.26/21,246.85 = 9,021.58/x
  3. Step 3: Cross multiply
    15,396.26x = 21,246.85 × 9,021.58
  4. Step 4: Simplify right side
    15,396.26x = 191,680,228.55
  5. Step 5: Solve for x
    x = 191,680,228.55/15,396.26
  6. Step 6: Final answer
    x = 12,449.79

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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.