Home / 15,579.68-21,500.26-8,506.38

Finding the Fourth Proportional to 15,579.68, 21,500.26 and 8,506.38

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Solution

The fourth proportional to 15,579.68, 21,500.26 and 8,506.38 is: 11,738.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,579.68 : 21,500.26 = 8,506.38 : x
  2. Step 2: Convert to fraction form
    15,579.68/21,500.26 = 8,506.38/x
  3. Step 3: Cross multiply
    15,579.68x = 21,500.26 × 8,506.38
  4. Step 4: Simplify right side
    15,579.68x = 182,889,381.66
  5. Step 5: Solve for x
    x = 182,889,381.66/15,579.68
  6. Step 6: Final answer
    x = 11,738.97

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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.