Home / 15,399.15-21,250.84-8,325.57

Finding the Fourth Proportional to 15,399.15, 21,250.84 and 8,325.57

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Solution

The fourth proportional to 15,399.15, 21,250.84 and 8,325.57 is: 11,489.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,399.15 : 21,250.84 = 8,325.57 : x
  2. Step 2: Convert to fraction form
    15,399.15/21,250.84 = 8,325.57/x
  3. Step 3: Cross multiply
    15,399.15x = 21,250.84 × 8,325.57
  4. Step 4: Simplify right side
    15,399.15x = 176,925,355.98
  5. Step 5: Solve for x
    x = 176,925,355.98/15,399.15
  6. Step 6: Final answer
    x = 11,489.29

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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.