Home / 42,273.21-63,420.35-12,691.59

Finding the Fourth Proportional to 42,273.21, 63,420.35 and 12,691.59

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Solution

The fourth proportional to 42,273.21, 63,420.35 and 12,691.59 is: 19,040.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,273.21 : 63,420.35 = 12,691.59 : x
  2. Step 2: Convert to fraction form
    42,273.21/63,420.35 = 12,691.59/x
  3. Step 3: Cross multiply
    42,273.21x = 63,420.35 × 12,691.59
  4. Step 4: Simplify right side
    42,273.21x = 804,905,016.40
  5. Step 5: Solve for x
    x = 804,905,016.40/42,273.21
  6. Step 6: Final answer
    x = 19,040.55

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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.