Home / 13,910.00-20,870.12-6,516.86

Finding the Fourth Proportional to 13,910.00, 20,870.12 and 6,516.86

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Solution

The fourth proportional to 13,910.00, 20,870.12 and 6,516.86 is: 9,777.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,910.00 : 20,870.12 = 6,516.86 : x
  2. Step 2: Convert to fraction form
    13,910.00/20,870.12 = 6,516.86/x
  3. Step 3: Cross multiply
    13,910.00x = 20,870.12 × 6,516.86
  4. Step 4: Simplify right side
    13,910.00x = 136,007,562.16
  5. Step 5: Solve for x
    x = 136,007,562.16/13,910.00
  6. Step 6: Final answer
    x = 9,777.69

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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.