Home / 21,518.08-32,279.16-8,012.80

Finding the Fourth Proportional to 21,518.08, 32,279.16 and 8,012.80

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Solution

The fourth proportional to 21,518.08, 32,279.16 and 8,012.80 is: 12,019.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,518.08 : 32,279.16 = 8,012.80 : x
  2. Step 2: Convert to fraction form
    21,518.08/32,279.16 = 8,012.80/x
  3. Step 3: Cross multiply
    21,518.08x = 32,279.16 × 8,012.80
  4. Step 4: Simplify right side
    21,518.08x = 258,646,453.25
  5. Step 5: Solve for x
    x = 258,646,453.25/21,518.08
  6. Step 6: Final answer
    x = 12,019.96

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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.