Home / 13,519.36-20,279.28-5,726.72

Finding the Fourth Proportional to 13,519.36, 20,279.28 and 5,726.72

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Solution

The fourth proportional to 13,519.36, 20,279.28 and 5,726.72 is: 8,590.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,519.36 : 20,279.28 = 5,726.72 : x
  2. Step 2: Convert to fraction form
    13,519.36/20,279.28 = 5,726.72/x
  3. Step 3: Cross multiply
    13,519.36x = 20,279.28 × 5,726.72
  4. Step 4: Simplify right side
    13,519.36x = 116,133,758.36
  5. Step 5: Solve for x
    x = 116,133,758.36/13,519.36
  6. Step 6: Final answer
    x = 8,590.18

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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.