Home / 17,720.29-26,571.12-7,855.30

Finding the Fourth Proportional to 17,720.29, 26,571.12 and 7,855.30

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Solution

The fourth proportional to 17,720.29, 26,571.12 and 7,855.30 is: 11,778.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,720.29 : 26,571.12 = 7,855.30 : x
  2. Step 2: Convert to fraction form
    17,720.29/26,571.12 = 7,855.30/x
  3. Step 3: Cross multiply
    17,720.29x = 26,571.12 × 7,855.30
  4. Step 4: Simplify right side
    17,720.29x = 208,724,118.94
  5. Step 5: Solve for x
    x = 208,724,118.94/17,720.29
  6. Step 6: Final answer
    x = 11,778.82

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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.