Home / 20,347.75-30,660.26-16,731

Finding the Fourth Proportional to 20,347.75, 30,660.26 and 16,731

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Solution

The fourth proportional to 20,347.75, 30,660.26 and 16,731 is: 25,210.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,347.75 : 30,660.26 = 16,731 : x
  2. Step 2: Convert to fraction form
    20,347.75/30,660.26 = 16,731/x
  3. Step 3: Cross multiply
    20,347.75x = 30,660.26 × 16,731
  4. Step 4: Simplify right side
    20,347.75x = 512,976,810.06
  5. Step 5: Solve for x
    x = 512,976,810.06/20,347.75
  6. Step 6: Final answer
    x = 25,210.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.