Home / 18,520.89-27,776.40-5,193.15

Finding the Fourth Proportional to 18,520.89, 27,776.40 and 5,193.15

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Solution

The fourth proportional to 18,520.89, 27,776.40 and 5,193.15 is: 7,788.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.89 : 27,776.40 = 5,193.15 : x
  2. Step 2: Convert to fraction form
    18,520.89/27,776.40 = 5,193.15/x
  3. Step 3: Cross multiply
    18,520.89x = 27,776.40 × 5,193.15
  4. Step 4: Simplify right side
    18,520.89x = 144,247,011.66
  5. Step 5: Solve for x
    x = 144,247,011.66/18,520.89
  6. Step 6: Final answer
    x = 7,788.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.