Home / 20,790.77-28,618.97-18,133.56

Finding the Fourth Proportional to 20,790.77, 28,618.97 and 18,133.56

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Solution

The fourth proportional to 20,790.77, 28,618.97 and 18,133.56 is: 24,961.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790.77 : 28,618.97 = 18,133.56 : x
  2. Step 2: Convert to fraction form
    20,790.77/28,618.97 = 18,133.56/x
  3. Step 3: Cross multiply
    20,790.77x = 28,618.97 × 18,133.56
  4. Step 4: Simplify right side
    20,790.77x = 518,963,718.97
  5. Step 5: Solve for x
    x = 518,963,718.97/20,790.77
  6. Step 6: Final answer
    x = 24,961.26

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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.