Home / 18,997.85-28,488.40-10,111.04

Finding the Fourth Proportional to 18,997.85, 28,488.40 and 10,111.04

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Solution

The fourth proportional to 18,997.85, 28,488.40 and 10,111.04 is: 15,162.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,997.85 : 28,488.40 = 10,111.04 : x
  2. Step 2: Convert to fraction form
    18,997.85/28,488.40 = 10,111.04/x
  3. Step 3: Cross multiply
    18,997.85x = 28,488.40 × 10,111.04
  4. Step 4: Simplify right side
    18,997.85x = 288,047,305.99
  5. Step 5: Solve for x
    x = 288,047,305.99/18,997.85
  6. Step 6: Final answer
    x = 15,162.10

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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.