Home / 28,514.81-42,761.58-9,789.54

Finding the Fourth Proportional to 28,514.81, 42,761.58 and 9,789.54

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Solution

The fourth proportional to 28,514.81, 42,761.58 and 9,789.54 is: 14,680.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,514.81 : 42,761.58 = 9,789.54 : x
  2. Step 2: Convert to fraction form
    28,514.81/42,761.58 = 9,789.54/x
  3. Step 3: Cross multiply
    28,514.81x = 42,761.58 × 9,789.54
  4. Step 4: Simplify right side
    28,514.81x = 418,616,197.87
  5. Step 5: Solve for x
    x = 418,616,197.87/28,514.81
  6. Step 6: Final answer
    x = 14,680.66

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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.