Home / 13,518.29-20,279.36-4,159.09

Finding the Fourth Proportional to 13,518.29, 20,279.36 and 4,159.09

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Solution

The fourth proportional to 13,518.29, 20,279.36 and 4,159.09 is: 6,239.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.29 : 20,279.36 = 4,159.09 : x
  2. Step 2: Convert to fraction form
    13,518.29/20,279.36 = 4,159.09/x
  3. Step 3: Cross multiply
    13,518.29x = 20,279.36 × 4,159.09
  4. Step 4: Simplify right side
    13,518.29x = 84,343,643.08
  5. Step 5: Solve for x
    x = 84,343,643.08/13,518.29
  6. Step 6: Final answer
    x = 6,239.22

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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.