Home / 12,750.98-19,126.47-3,985.90

Finding the Fourth Proportional to 12,750.98, 19,126.47 and 3,985.90

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Solution

The fourth proportional to 12,750.98, 19,126.47 and 3,985.90 is: 5,978.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,750.98 : 19,126.47 = 3,985.90 : x
  2. Step 2: Convert to fraction form
    12,750.98/19,126.47 = 3,985.90/x
  3. Step 3: Cross multiply
    12,750.98x = 19,126.47 × 3,985.90
  4. Step 4: Simplify right side
    12,750.98x = 76,236,196.77
  5. Step 5: Solve for x
    x = 76,236,196.77/12,750.98
  6. Step 6: Final answer
    x = 5,978.85

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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.