Home / 20,172.14-27,838.58-11,219.81

Finding the Fourth Proportional to 20,172.14, 27,838.58 and 11,219.81

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Solution

The fourth proportional to 20,172.14, 27,838.58 and 11,219.81 is: 15,483.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,172.14 : 27,838.58 = 11,219.81 : x
  2. Step 2: Convert to fraction form
    20,172.14/27,838.58 = 11,219.81/x
  3. Step 3: Cross multiply
    20,172.14x = 27,838.58 × 11,219.81
  4. Step 4: Simplify right side
    20,172.14x = 312,343,578.27
  5. Step 5: Solve for x
    x = 312,343,578.27/20,172.14
  6. Step 6: Final answer
    x = 15,483.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.