Home / 31,356.90-47,034.77-12,636.43

Finding the Fourth Proportional to 31,356.90, 47,034.77 and 12,636.43

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Solution

The fourth proportional to 31,356.90, 47,034.77 and 12,636.43 is: 18,954.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,356.90 : 47,034.77 = 12,636.43 : x
  2. Step 2: Convert to fraction form
    31,356.90/47,034.77 = 12,636.43/x
  3. Step 3: Cross multiply
    31,356.90x = 47,034.77 × 12,636.43
  4. Step 4: Simplify right side
    31,356.90x = 594,351,397.90
  5. Step 5: Solve for x
    x = 594,351,397.90/31,356.90
  6. Step 6: Final answer
    x = 18,954.41

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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.