Home / 20,707.70-31,061.39-5,916.60

Finding the Fourth Proportional to 20,707.70, 31,061.39 and 5,916.60

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Solution

The fourth proportional to 20,707.70, 31,061.39 and 5,916.60 is: 8,874.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,707.70 : 31,061.39 = 5,916.60 : x
  2. Step 2: Convert to fraction form
    20,707.70/31,061.39 = 5,916.60/x
  3. Step 3: Cross multiply
    20,707.70x = 31,061.39 × 5,916.60
  4. Step 4: Simplify right side
    20,707.70x = 183,777,790.49
  5. Step 5: Solve for x
    x = 183,777,790.49/20,707.70
  6. Step 6: Final answer
    x = 8,874.85

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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.