Home / 15,500.96-21,391.24-8,427.40

Finding the Fourth Proportional to 15,500.96, 21,391.24 and 8,427.40

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Solution

The fourth proportional to 15,500.96, 21,391.24 and 8,427.40 is: 11,629.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,500.96 : 21,391.24 = 8,427.40 : x
  2. Step 2: Convert to fraction form
    15,500.96/21,391.24 = 8,427.40/x
  3. Step 3: Cross multiply
    15,500.96x = 21,391.24 × 8,427.40
  4. Step 4: Simplify right side
    15,500.96x = 180,272,535.98
  5. Step 5: Solve for x
    x = 180,272,535.98/15,500.96
  6. Step 6: Final answer
    x = 11,629.77

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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.