Home / 21,755.36-32,643.88-8,617.20

Finding the Fourth Proportional to 21,755.36, 32,643.88 and 8,617.20

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Solution

The fourth proportional to 21,755.36, 32,643.88 and 8,617.20 is: 12,930.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,755.36 : 32,643.88 = 8,617.20 : x
  2. Step 2: Convert to fraction form
    21,755.36/32,643.88 = 8,617.20/x
  3. Step 3: Cross multiply
    21,755.36x = 32,643.88 × 8,617.20
  4. Step 4: Simplify right side
    21,755.36x = 281,298,842.74
  5. Step 5: Solve for x
    x = 281,298,842.74/21,755.36
  6. Step 6: Final answer
    x = 12,930.09

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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.