Home / 20,916.08-31,369.49-6,126.15

Finding the Fourth Proportional to 20,916.08, 31,369.49 and 6,126.15

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Solution

The fourth proportional to 20,916.08, 31,369.49 and 6,126.15 is: 9,187.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,916.08 : 31,369.49 = 6,126.15 : x
  2. Step 2: Convert to fraction form
    20,916.08/31,369.49 = 6,126.15/x
  3. Step 3: Cross multiply
    20,916.08x = 31,369.49 × 6,126.15
  4. Step 4: Simplify right side
    20,916.08x = 192,174,170.53
  5. Step 5: Solve for x
    x = 192,174,170.53/20,916.08
  6. Step 6: Final answer
    x = 9,187.87

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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.