Home / 34,142.94-47,120.34-20,717.58

Finding the Fourth Proportional to 34,142.94, 47,120.34 and 20,717.58

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Solution

The fourth proportional to 34,142.94, 47,120.34 and 20,717.58 is: 28,592.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,142.94 : 47,120.34 = 20,717.58 : x
  2. Step 2: Convert to fraction form
    34,142.94/47,120.34 = 20,717.58/x
  3. Step 3: Cross multiply
    34,142.94x = 47,120.34 × 20,717.58
  4. Step 4: Simplify right side
    34,142.94x = 976,219,413.58
  5. Step 5: Solve for x
    x = 976,219,413.58/34,142.94
  6. Step 6: Final answer
    x = 28,592.13

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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.