Home / 31,989.57-44,159.77-20,664.59

Finding the Fourth Proportional to 31,989.57, 44,159.77 and 20,664.59

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Solution

The fourth proportional to 31,989.57, 44,159.77 and 20,664.59 is: 28,526.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,989.57 : 44,159.77 = 20,664.59 : x
  2. Step 2: Convert to fraction form
    31,989.57/44,159.77 = 20,664.59/x
  3. Step 3: Cross multiply
    31,989.57x = 44,159.77 × 20,664.59
  4. Step 4: Simplify right side
    31,989.57x = 912,543,489.88
  5. Step 5: Solve for x
    x = 912,543,489.88/31,989.57
  6. Step 6: Final answer
    x = 28,526.28

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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.