Home / 15,499.19-21,388.91-8,425.59

Finding the Fourth Proportional to 15,499.19, 21,388.91 and 8,425.59

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Solution

The fourth proportional to 15,499.19, 21,388.91 and 8,425.59 is: 11,627.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,499.19 : 21,388.91 = 8,425.59 : x
  2. Step 2: Convert to fraction form
    15,499.19/21,388.91 = 8,425.59/x
  3. Step 3: Cross multiply
    15,499.19x = 21,388.91 × 8,425.59
  4. Step 4: Simplify right side
    15,499.19x = 180,214,144.08
  5. Step 5: Solve for x
    x = 180,214,144.08/15,499.19
  6. Step 6: Final answer
    x = 11,627.33

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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.