Home / 28,902.78-43,358.40-12,262.80

Finding the Fourth Proportional to 28,902.78, 43,358.40 and 12,262.80

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Solution

The fourth proportional to 28,902.78, 43,358.40 and 12,262.80 is: 18,395.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,902.78 : 43,358.40 = 12,262.80 : x
  2. Step 2: Convert to fraction form
    28,902.78/43,358.40 = 12,262.80/x
  3. Step 3: Cross multiply
    28,902.78x = 43,358.40 × 12,262.80
  4. Step 4: Simplify right side
    28,902.78x = 531,695,387.52
  5. Step 5: Solve for x
    x = 531,695,387.52/28,902.78
  6. Step 6: Final answer
    x = 18,395.99

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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.