Home / 42,208.92-63,280.56-21,138.14

Finding the Fourth Proportional to 42,208.92, 63,280.56 and 21,138.14

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Solution

The fourth proportional to 42,208.92, 63,280.56 and 21,138.14 is: 31,690.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,208.92 : 63,280.56 = 21,138.14 : x
  2. Step 2: Convert to fraction form
    42,208.92/63,280.56 = 21,138.14/x
  3. Step 3: Cross multiply
    42,208.92x = 63,280.56 × 21,138.14
  4. Step 4: Simplify right side
    42,208.92x = 1,337,633,336.56
  5. Step 5: Solve for x
    x = 1,337,633,336.56/42,208.92
  6. Step 6: Final answer
    x = 31,690.77

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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.