Home / 20,278.14-28,003.06-19,173.68

Finding the Fourth Proportional to 20,278.14, 28,003.06 and 19,173.68

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Solution

The fourth proportional to 20,278.14, 28,003.06 and 19,173.68 is: 26,477.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.14 : 28,003.06 = 19,173.68 : x
  2. Step 2: Convert to fraction form
    20,278.14/28,003.06 = 19,173.68/x
  3. Step 3: Cross multiply
    20,278.14x = 28,003.06 × 19,173.68
  4. Step 4: Simplify right side
    20,278.14x = 536,921,711.46
  5. Step 5: Solve for x
    x = 536,921,711.46/20,278.14
  6. Step 6: Final answer
    x = 26,477.86

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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.