Home / 34,143.69-47,121.38-20,718.33

Finding the Fourth Proportional to 34,143.69, 47,121.38 and 20,718.33

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Solution

The fourth proportional to 34,143.69, 47,121.38 and 20,718.33 is: 28,593.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,143.69 : 47,121.38 = 20,718.33 : x
  2. Step 2: Convert to fraction form
    34,143.69/47,121.38 = 20,718.33/x
  3. Step 3: Cross multiply
    34,143.69x = 47,121.38 × 20,718.33
  4. Step 4: Simplify right side
    34,143.69x = 976,276,197.30
  5. Step 5: Solve for x
    x = 976,276,197.30/34,143.69
  6. Step 6: Final answer
    x = 28,593.17

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Double scale
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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.