Home / 28,198.72-42,299.16-13,400.08

Finding the Fourth Proportional to 28,198.72, 42,299.16 and 13,400.08

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Solution

The fourth proportional to 28,198.72, 42,299.16 and 13,400.08 is: 20,100.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,198.72 : 42,299.16 = 13,400.08 : x
  2. Step 2: Convert to fraction form
    28,198.72/42,299.16 = 13,400.08/x
  3. Step 3: Cross multiply
    28,198.72x = 42,299.16 × 13,400.08
  4. Step 4: Simplify right side
    28,198.72x = 566,812,127.93
  5. Step 5: Solve for x
    x = 566,812,127.93/28,198.72
  6. Step 6: Final answer
    x = 20,100.63

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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.