Home / 13,669.36-20,505.12-6,740.08

Finding the Fourth Proportional to 13,669.36, 20,505.12 and 6,740.08

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Solution

The fourth proportional to 13,669.36, 20,505.12 and 6,740.08 is: 10,110.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,669.36 : 20,505.12 = 6,740.08 : x
  2. Step 2: Convert to fraction form
    13,669.36/20,505.12 = 6,740.08/x
  3. Step 3: Cross multiply
    13,669.36x = 20,505.12 × 6,740.08
  4. Step 4: Simplify right side
    13,669.36x = 138,206,149.21
  5. Step 5: Solve for x
    x = 138,206,149.21/13,669.36
  6. Step 6: Final answer
    x = 10,110.65

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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.