Home / 20,916.65-31,372.68-6,125.72

Finding the Fourth Proportional to 20,916.65, 31,372.68 and 6,125.72

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Solution

The fourth proportional to 20,916.65, 31,372.68 and 6,125.72 is: 9,187.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,916.65 : 31,372.68 = 6,125.72 : x
  2. Step 2: Convert to fraction form
    20,916.65/31,372.68 = 6,125.72/x
  3. Step 3: Cross multiply
    20,916.65x = 31,372.68 × 6,125.72
  4. Step 4: Simplify right side
    20,916.65x = 192,180,253.33
  5. Step 5: Solve for x
    x = 192,180,253.33/20,916.65
  6. Step 6: Final answer
    x = 9,187.91

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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.