Home / 18,345.90-27,518.85-5,198.10

Finding the Fourth Proportional to 18,345.90, 27,518.85 and 5,198.10

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Solution

The fourth proportional to 18,345.90, 27,518.85 and 5,198.10 is: 7,797.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.90 : 27,518.85 = 5,198.10 : x
  2. Step 2: Convert to fraction form
    18,345.90/27,518.85 = 5,198.10/x
  3. Step 3: Cross multiply
    18,345.90x = 27,518.85 × 5,198.10
  4. Step 4: Simplify right side
    18,345.90x = 143,045,734.19
  5. Step 5: Solve for x
    x = 143,045,734.19/18,345.90
  6. Step 6: Final answer
    x = 7,797.15

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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.