Home / 18,199.61-27,280.78-10,290.77

Finding the Fourth Proportional to 18,199.61, 27,280.78 and 10,290.77

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Solution

The fourth proportional to 18,199.61, 27,280.78 and 10,290.77 is: 15,425.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,199.61 : 27,280.78 = 10,290.77 : x
  2. Step 2: Convert to fraction form
    18,199.61/27,280.78 = 10,290.77/x
  3. Step 3: Cross multiply
    18,199.61x = 27,280.78 × 10,290.77
  4. Step 4: Simplify right side
    18,199.61x = 280,740,070.27
  5. Step 5: Solve for x
    x = 280,740,070.27/18,199.61
  6. Step 6: Final answer
    x = 15,425.61

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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.