Home / 20,143.06-27,800.75-16,780.55

Finding the Fourth Proportional to 20,143.06, 27,800.75 and 16,780.55

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Solution

The fourth proportional to 20,143.06, 27,800.75 and 16,780.55 is: 23,159.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.06 : 27,800.75 = 16,780.55 : x
  2. Step 2: Convert to fraction form
    20,143.06/27,800.75 = 16,780.55/x
  3. Step 3: Cross multiply
    20,143.06x = 27,800.75 × 16,780.55
  4. Step 4: Simplify right side
    20,143.06x = 466,511,652.51
  5. Step 5: Solve for x
    x = 466,511,652.51/20,143.06
  6. Step 6: Final answer
    x = 23,159.93

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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.