Home / 31,990.94-44,161.65-20,665.96

Finding the Fourth Proportional to 31,990.94, 44,161.65 and 20,665.96

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Solution

The fourth proportional to 31,990.94, 44,161.65 and 20,665.96 is: 28,528.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,990.94 : 44,161.65 = 20,665.96 : x
  2. Step 2: Convert to fraction form
    31,990.94/44,161.65 = 20,665.96/x
  3. Step 3: Cross multiply
    31,990.94x = 44,161.65 × 20,665.96
  4. Step 4: Simplify right side
    31,990.94x = 912,642,671.63
  5. Step 5: Solve for x
    x = 912,642,671.63/31,990.94
  6. Step 6: Final answer
    x = 28,528.16

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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.