Home / 15,500.82-21,391.35-8,427.40

Finding the Fourth Proportional to 15,500.82, 21,391.35 and 8,427.40

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Solution

The fourth proportional to 15,500.82, 21,391.35 and 8,427.40 is: 11,629.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,500.82 : 21,391.35 = 8,427.40 : x
  2. Step 2: Convert to fraction form
    15,500.82/21,391.35 = 8,427.40/x
  3. Step 3: Cross multiply
    15,500.82x = 21,391.35 × 8,427.40
  4. Step 4: Simplify right side
    15,500.82x = 180,273,462.99
  5. Step 5: Solve for x
    x = 180,273,462.99/15,500.82
  6. Step 6: Final answer
    x = 11,629.93

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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.