Home / 31,990.07-44,160.46-20,665.09

Finding the Fourth Proportional to 31,990.07, 44,160.46 and 20,665.09

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Solution

The fourth proportional to 31,990.07, 44,160.46 and 20,665.09 is: 28,526.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,990.07 : 44,160.46 = 20,665.09 : x
  2. Step 2: Convert to fraction form
    31,990.07/44,160.46 = 20,665.09/x
  3. Step 3: Cross multiply
    31,990.07x = 44,160.46 × 20,665.09
  4. Step 4: Simplify right side
    31,990.07x = 912,579,718.28
  5. Step 5: Solve for x
    x = 912,579,718.28/31,990.07
  6. Step 6: Final answer
    x = 28,526.97

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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.