Home / 19,921.86-27,520.11-18,872.10

Finding the Fourth Proportional to 19,921.86, 27,520.11 and 18,872.10

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Solution

The fourth proportional to 19,921.86, 27,520.11 and 18,872.10 is: 26,069.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,921.86 : 27,520.11 = 18,872.10 : x
  2. Step 2: Convert to fraction form
    19,921.86/27,520.11 = 18,872.10/x
  3. Step 3: Cross multiply
    19,921.86x = 27,520.11 × 18,872.10
  4. Step 4: Simplify right side
    19,921.86x = 519,362,267.93
  5. Step 5: Solve for x
    x = 519,362,267.93/19,921.86
  6. Step 6: Final answer
    x = 26,069.97

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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.