Home / 31,331.94-47,010.21-13,789.47

Finding the Fourth Proportional to 31,331.94, 47,010.21 and 13,789.47

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Solution

The fourth proportional to 31,331.94, 47,010.21 and 13,789.47 is: 20,689.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,331.94 : 47,010.21 = 13,789.47 : x
  2. Step 2: Convert to fraction form
    31,331.94/47,010.21 = 13,789.47/x
  3. Step 3: Cross multiply
    31,331.94x = 47,010.21 × 13,789.47
  4. Step 4: Simplify right side
    31,331.94x = 648,245,880.49
  5. Step 5: Solve for x
    x = 648,245,880.49/31,331.94
  6. Step 6: Final answer
    x = 20,689.62

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1.5x scale

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.