Home / 21,621.08-32,451.83-13,317.29

Finding the Fourth Proportional to 21,621.08, 32,451.83 and 13,317.29

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Solution

The fourth proportional to 21,621.08, 32,451.83 and 13,317.29 is: 19,988.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,621.08 : 32,451.83 = 13,317.29 : x
  2. Step 2: Convert to fraction form
    21,621.08/32,451.83 = 13,317.29/x
  3. Step 3: Cross multiply
    21,621.08x = 32,451.83 × 13,317.29
  4. Step 4: Simplify right side
    21,621.08x = 432,170,431.14
  5. Step 5: Solve for x
    x = 432,170,431.14/21,621.08
  6. Step 6: Final answer
    x = 19,988.38

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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.