Home / 15,451.37-21,322.93-8,377.79

Finding the Fourth Proportional to 15,451.37, 21,322.93 and 8,377.79

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Solution

The fourth proportional to 15,451.37, 21,322.93 and 8,377.79 is: 11,561.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,451.37 : 21,322.93 = 8,377.79 : x
  2. Step 2: Convert to fraction form
    15,451.37/21,322.93 = 8,377.79/x
  3. Step 3: Cross multiply
    15,451.37x = 21,322.93 × 8,377.79
  4. Step 4: Simplify right side
    15,451.37x = 178,639,029.72
  5. Step 5: Solve for x
    x = 178,639,029.72/15,451.37
  6. Step 6: Final answer
    x = 11,561.37

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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.