Home / 18,136.74-27,209.69-8,781.24

Finding the Fourth Proportional to 18,136.74, 27,209.69 and 8,781.24

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Solution

The fourth proportional to 18,136.74, 27,209.69 and 8,781.24 is: 13,174.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,136.74 : 27,209.69 = 8,781.24 : x
  2. Step 2: Convert to fraction form
    18,136.74/27,209.69 = 8,781.24/x
  3. Step 3: Cross multiply
    18,136.74x = 27,209.69 × 8,781.24
  4. Step 4: Simplify right side
    18,136.74x = 238,934,774.31
  5. Step 5: Solve for x
    x = 238,934,774.31/18,136.74
  6. Step 6: Final answer
    x = 13,174.08

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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.