Home / 21,181.04-31,749.39-7,136.22

Finding the Fourth Proportional to 21,181.04, 31,749.39 and 7,136.22

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Solution

The fourth proportional to 21,181.04, 31,749.39 and 7,136.22 is: 10,696.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,181.04 : 31,749.39 = 7,136.22 : x
  2. Step 2: Convert to fraction form
    21,181.04/31,749.39 = 7,136.22/x
  3. Step 3: Cross multiply
    21,181.04x = 31,749.39 × 7,136.22
  4. Step 4: Simplify right side
    21,181.04x = 226,570,473.16
  5. Step 5: Solve for x
    x = 226,570,473.16/21,181.04
  6. Step 6: Final answer
    x = 10,696.85

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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.