Home / 11,811.24-17,720.95-5,242.02

Finding the Fourth Proportional to 11,811.24, 17,720.95 and 5,242.02

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Solution

The fourth proportional to 11,811.24, 17,720.95 and 5,242.02 is: 7,864.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,811.24 : 17,720.95 = 5,242.02 : x
  2. Step 2: Convert to fraction form
    11,811.24/17,720.95 = 5,242.02/x
  3. Step 3: Cross multiply
    11,811.24x = 17,720.95 × 5,242.02
  4. Step 4: Simplify right side
    11,811.24x = 92,893,574.32
  5. Step 5: Solve for x
    x = 92,893,574.32/11,811.24
  6. Step 6: Final answer
    x = 7,864.85

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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.