Home / 12,385.68-17,091.93-6,720.27

Finding the Fourth Proportional to 12,385.68, 17,091.93 and 6,720.27

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Solution

The fourth proportional to 12,385.68, 17,091.93 and 6,720.27 is: 9,273.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385.68 : 17,091.93 = 6,720.27 : x
  2. Step 2: Convert to fraction form
    12,385.68/17,091.93 = 6,720.27/x
  3. Step 3: Cross multiply
    12,385.68x = 17,091.93 × 6,720.27
  4. Step 4: Simplify right side
    12,385.68x = 114,862,384.42
  5. Step 5: Solve for x
    x = 114,862,384.42/12,385.68
  6. Step 6: Final answer
    x = 9,273.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.