Home / 42,138.64-63,226.41-19,967.86

Finding the Fourth Proportional to 42,138.64, 63,226.41 and 19,967.86

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Solution

The fourth proportional to 42,138.64, 63,226.41 and 19,967.86 is: 29,960.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,138.64 : 63,226.41 = 19,967.86 : x
  2. Step 2: Convert to fraction form
    42,138.64/63,226.41 = 19,967.86/x
  3. Step 3: Cross multiply
    42,138.64x = 63,226.41 × 19,967.86
  4. Step 4: Simplify right side
    42,138.64x = 1,262,496,103.18
  5. Step 5: Solve for x
    x = 1,262,496,103.18/42,138.64
  6. Step 6: Final answer
    x = 29,960.53

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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.