Home / 13,985.92-20,971.66-4,123.91

Finding the Fourth Proportional to 13,985.92, 20,971.66 and 4,123.91

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Solution

The fourth proportional to 13,985.92, 20,971.66 and 4,123.91 is: 6,183.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,985.92 : 20,971.66 = 4,123.91 : x
  2. Step 2: Convert to fraction form
    13,985.92/20,971.66 = 4,123.91/x
  3. Step 3: Cross multiply
    13,985.92x = 20,971.66 × 4,123.91
  4. Step 4: Simplify right side
    13,985.92x = 86,485,288.24
  5. Step 5: Solve for x
    x = 86,485,288.24/13,985.92
  6. Step 6: Final answer
    x = 6,183.74

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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.