Home / 20,750.48-31,125.69-7,603.88

Finding the Fourth Proportional to 20,750.48, 31,125.69 and 7,603.88

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Solution

The fourth proportional to 20,750.48, 31,125.69 and 7,603.88 is: 11,405.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,750.48 : 31,125.69 = 7,603.88 : x
  2. Step 2: Convert to fraction form
    20,750.48/31,125.69 = 7,603.88/x
  3. Step 3: Cross multiply
    20,750.48x = 31,125.69 × 7,603.88
  4. Step 4: Simplify right side
    20,750.48x = 236,675,856.05
  5. Step 5: Solve for x
    x = 236,675,856.05/20,750.48
  6. Step 6: Final answer
    x = 11,405.80

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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.