Home / 31,985.20-44,161.32-20,682.04

Finding the Fourth Proportional to 31,985.20, 44,161.32 and 20,682.04

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Solution

The fourth proportional to 31,985.20, 44,161.32 and 20,682.04 is: 28,555.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,985.20 : 44,161.32 = 20,682.04 : x
  2. Step 2: Convert to fraction form
    31,985.20/44,161.32 = 20,682.04/x
  3. Step 3: Cross multiply
    31,985.20x = 44,161.32 × 20,682.04
  4. Step 4: Simplify right side
    31,985.20x = 913,346,186.69
  5. Step 5: Solve for x
    x = 913,346,186.69/31,985.20
  6. Step 6: Final answer
    x = 28,555.28

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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.