Home / 15,419.45-21,278.99-8,346.02

Finding the Fourth Proportional to 15,419.45, 21,278.99 and 8,346.02

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Solution

The fourth proportional to 15,419.45, 21,278.99 and 8,346.02 is: 11,517.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,419.45 : 21,278.99 = 8,346.02 : x
  2. Step 2: Convert to fraction form
    15,419.45/21,278.99 = 8,346.02/x
  3. Step 3: Cross multiply
    15,419.45x = 21,278.99 × 8,346.02
  4. Step 4: Simplify right side
    15,419.45x = 177,594,727.99
  5. Step 5: Solve for x
    x = 177,594,727.99/15,419.45
  6. Step 6: Final answer
    x = 11,517.58

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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.