Home / 28,027.91-38,678.78-15,453.11

Finding the Fourth Proportional to 28,027.91, 38,678.78 and 15,453.11

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Solution

The fourth proportional to 28,027.91, 38,678.78 and 15,453.11 is: 21,325.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,027.91 : 38,678.78 = 15,453.11 : x
  2. Step 2: Convert to fraction form
    28,027.91/38,678.78 = 15,453.11/x
  3. Step 3: Cross multiply
    28,027.91x = 38,678.78 × 15,453.11
  4. Step 4: Simplify right side
    28,027.91x = 597,707,442.01
  5. Step 5: Solve for x
    x = 597,707,442.01/28,027.91
  6. Step 6: Final answer
    x = 21,325.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.