Home / 15,342.14-21,172.90-8,629.88

Finding the Fourth Proportional to 15,342.14, 21,172.90 and 8,629.88

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Solution

The fourth proportional to 15,342.14, 21,172.90 and 8,629.88 is: 11,909.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,342.14 : 21,172.90 = 8,629.88 : x
  2. Step 2: Convert to fraction form
    15,342.14/21,172.90 = 8,629.88/x
  3. Step 3: Cross multiply
    15,342.14x = 21,172.90 × 8,629.88
  4. Step 4: Simplify right side
    15,342.14x = 182,719,586.25
  5. Step 5: Solve for x
    x = 182,719,586.25/15,342.14
  6. Step 6: Final answer
    x = 11,909.65

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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.