Home / 13,777.85-20,663.66-3,916.91

Finding the Fourth Proportional to 13,777.85, 20,663.66 and 3,916.91

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Solution

The fourth proportional to 13,777.85, 20,663.66 and 3,916.91 is: 5,874.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,777.85 : 20,663.66 = 3,916.91 : x
  2. Step 2: Convert to fraction form
    13,777.85/20,663.66 = 3,916.91/x
  3. Step 3: Cross multiply
    13,777.85x = 20,663.66 × 3,916.91
  4. Step 4: Simplify right side
    13,777.85x = 80,937,573.59
  5. Step 5: Solve for x
    x = 80,937,573.59/13,777.85
  6. Step 6: Final answer
    x = 5,874.47

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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.