Home / 34,143.66-47,121.35-20,718.32

Finding the Fourth Proportional to 34,143.66, 47,121.35 and 20,718.32

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Solution

The fourth proportional to 34,143.66, 47,121.35 and 20,718.32 is: 28,593.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,143.66 : 47,121.35 = 20,718.32 : x
  2. Step 2: Convert to fraction form
    34,143.66/47,121.35 = 20,718.32/x
  3. Step 3: Cross multiply
    34,143.66x = 47,121.35 × 20,718.32
  4. Step 4: Simplify right side
    34,143.66x = 976,274,868.93
  5. Step 5: Solve for x
    x = 976,274,868.93/34,143.66
  6. Step 6: Final answer
    x = 28,593.15

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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.