Home / 31,999.40-44,149.30-20,675.20

Finding the Fourth Proportional to 31,999.40, 44,149.30 and 20,675.20

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Solution

The fourth proportional to 31,999.40, 44,149.30 and 20,675.20 is: 28,525.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,999.40 : 44,149.30 = 20,675.20 : x
  2. Step 2: Convert to fraction form
    31,999.40/44,149.30 = 20,675.20/x
  3. Step 3: Cross multiply
    31,999.40x = 44,149.30 × 20,675.20
  4. Step 4: Simplify right side
    31,999.40x = 912,795,607.36
  5. Step 5: Solve for x
    x = 912,795,607.36/31,999.40
  6. Step 6: Final answer
    x = 28,525.40

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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.