Home / 12,279.51-18,422.91-5,709.60

Finding the Fourth Proportional to 12,279.51, 18,422.91 and 5,709.60

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Solution

The fourth proportional to 12,279.51, 18,422.91 and 5,709.60 is: 8,566.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,279.51 : 18,422.91 = 5,709.60 : x
  2. Step 2: Convert to fraction form
    12,279.51/18,422.91 = 5,709.60/x
  3. Step 3: Cross multiply
    12,279.51x = 18,422.91 × 5,709.60
  4. Step 4: Simplify right side
    12,279.51x = 105,187,446.94
  5. Step 5: Solve for x
    x = 105,187,446.94/12,279.51
  6. Step 6: Final answer
    x = 8,566.09

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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.