Home / 31,720.80-47,554.44-20,008.20

Finding the Fourth Proportional to 31,720.80, 47,554.44 and 20,008.20

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Solution

The fourth proportional to 31,720.80, 47,554.44 and 20,008.20 is: 29,995.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,720.80 : 47,554.44 = 20,008.20 : x
  2. Step 2: Convert to fraction form
    31,720.80/47,554.44 = 20,008.20/x
  3. Step 3: Cross multiply
    31,720.80x = 47,554.44 × 20,008.20
  4. Step 4: Simplify right side
    31,720.80x = 951,478,746.41
  5. Step 5: Solve for x
    x = 951,478,746.41/31,720.80
  6. Step 6: Final answer
    x = 29,995.42

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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.