Home / 42,679.08-63,932.88-21,267.21

Finding the Fourth Proportional to 42,679.08, 63,932.88 and 21,267.21

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Solution

The fourth proportional to 42,679.08, 63,932.88 and 21,267.21 is: 31,858.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,679.08 : 63,932.88 = 21,267.21 : x
  2. Step 2: Convert to fraction form
    42,679.08/63,932.88 = 21,267.21/x
  3. Step 3: Cross multiply
    42,679.08x = 63,932.88 × 21,267.21
  4. Step 4: Simplify right side
    42,679.08x = 1,359,673,984.86
  5. Step 5: Solve for x
    x = 1,359,673,984.86/42,679.08
  6. Step 6: Final answer
    x = 31,858.09

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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.