Home / 13,279.55-19,921.75-5,488.97

Finding the Fourth Proportional to 13,279.55, 19,921.75 and 5,488.97

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Solution

The fourth proportional to 13,279.55, 19,921.75 and 5,488.97 is: 8,234.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.55 : 19,921.75 = 5,488.97 : x
  2. Step 2: Convert to fraction form
    13,279.55/19,921.75 = 5,488.97/x
  3. Step 3: Cross multiply
    13,279.55x = 19,921.75 × 5,488.97
  4. Step 4: Simplify right side
    13,279.55x = 109,349,774.77
  5. Step 5: Solve for x
    x = 109,349,774.77/13,279.55
  6. Step 6: Final answer
    x = 8,234.45

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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.