Home / 21,269.27-31,903.90-8,775.56

Finding the Fourth Proportional to 21,269.27, 31,903.90 and 8,775.56

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Solution

The fourth proportional to 21,269.27, 31,903.90 and 8,775.56 is: 13,163.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.27 : 31,903.90 = 8,775.56 : x
  2. Step 2: Convert to fraction form
    21,269.27/31,903.90 = 8,775.56/x
  3. Step 3: Cross multiply
    21,269.27x = 31,903.90 × 8,775.56
  4. Step 4: Simplify right side
    21,269.27x = 279,974,679.41
  5. Step 5: Solve for x
    x = 279,974,679.41/21,269.27
  6. Step 6: Final answer
    x = 13,163.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.