Home / 20,136.99-30,215.39-9,051.51

Finding the Fourth Proportional to 20,136.99, 30,215.39 and 9,051.51

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Solution

The fourth proportional to 20,136.99, 30,215.39 and 9,051.51 is: 13,581.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.99 : 30,215.39 = 9,051.51 : x
  2. Step 2: Convert to fraction form
    20,136.99/30,215.39 = 9,051.51/x
  3. Step 3: Cross multiply
    20,136.99x = 30,215.39 × 9,051.51
  4. Step 4: Simplify right side
    20,136.99x = 273,494,859.48
  5. Step 5: Solve for x
    x = 273,494,859.48/20,136.99
  6. Step 6: Final answer
    x = 13,581.72

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Double scale
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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.