Home / 31,331.69-47,009.84-13,789.22

Finding the Fourth Proportional to 31,331.69, 47,009.84 and 13,789.22

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Solution

The fourth proportional to 31,331.69, 47,009.84 and 13,789.22 is: 20,689.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,331.69 : 47,009.84 = 13,789.22 : x
  2. Step 2: Convert to fraction form
    31,331.69/47,009.84 = 13,789.22/x
  3. Step 3: Cross multiply
    31,331.69x = 47,009.84 × 13,789.22
  4. Step 4: Simplify right side
    31,331.69x = 648,228,721.93
  5. Step 5: Solve for x
    x = 648,228,721.93/31,331.69
  6. Step 6: Final answer
    x = 20,689.24

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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.