Home / 13,882.08-20,808.54-5,111.40

Finding the Fourth Proportional to 13,882.08, 20,808.54 and 5,111.40

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Solution

The fourth proportional to 13,882.08, 20,808.54 and 5,111.40 is: 7,661.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,882.08 : 20,808.54 = 5,111.40 : x
  2. Step 2: Convert to fraction form
    13,882.08/20,808.54 = 5,111.40/x
  3. Step 3: Cross multiply
    13,882.08x = 20,808.54 × 5,111.40
  4. Step 4: Simplify right side
    13,882.08x = 106,360,771.36
  5. Step 5: Solve for x
    x = 106,360,771.36/13,882.08
  6. Step 6: Final answer
    x = 7,661.73

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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.