Home / 15,500.67-21,391.11-8,426.94

Finding the Fourth Proportional to 15,500.67, 21,391.11 and 8,426.94

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Solution

The fourth proportional to 15,500.67, 21,391.11 and 8,426.94 is: 11,629.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,500.67 : 21,391.11 = 8,426.94 : x
  2. Step 2: Convert to fraction form
    15,500.67/21,391.11 = 8,426.94/x
  3. Step 3: Cross multiply
    15,500.67x = 21,391.11 × 8,426.94
  4. Step 4: Simplify right side
    15,500.67x = 180,261,600.50
  5. Step 5: Solve for x
    x = 180,261,600.50/15,500.67
  6. Step 6: Final answer
    x = 11,629.28

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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.