Home / 28,330.92-42,449.13-19,997.28

Finding the Fourth Proportional to 28,330.92, 42,449.13 and 19,997.28

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Solution

The fourth proportional to 28,330.92, 42,449.13 and 19,997.28 is: 29,962.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,330.92 : 42,449.13 = 19,997.28 : x
  2. Step 2: Convert to fraction form
    28,330.92/42,449.13 = 19,997.28/x
  3. Step 3: Cross multiply
    28,330.92x = 42,449.13 × 19,997.28
  4. Step 4: Simplify right side
    28,330.92x = 848,867,138.37
  5. Step 5: Solve for x
    x = 848,867,138.37/28,330.92
  6. Step 6: Final answer
    x = 29,962.57

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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.