Home / 15,499.28-21,388.96-8,425.68

Finding the Fourth Proportional to 15,499.28, 21,388.96 and 8,425.68

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Solution

The fourth proportional to 15,499.28, 21,388.96 and 8,425.68 is: 11,627.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,499.28 : 21,388.96 = 8,425.68 : x
  2. Step 2: Convert to fraction form
    15,499.28/21,388.96 = 8,425.68/x
  3. Step 3: Cross multiply
    15,499.28x = 21,388.96 × 8,425.68
  4. Step 4: Simplify right side
    15,499.28x = 180,216,532.49
  5. Step 5: Solve for x
    x = 180,216,532.49/15,499.28
  6. Step 6: Final answer
    x = 11,627.41

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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.