Home / 20,856.84-31,273.92-7,528.02

Finding the Fourth Proportional to 20,856.84, 31,273.92 and 7,528.02

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Solution

The fourth proportional to 20,856.84, 31,273.92 and 7,528.02 is: 11,287.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,856.84 : 31,273.92 = 7,528.02 : x
  2. Step 2: Convert to fraction form
    20,856.84/31,273.92 = 7,528.02/x
  3. Step 3: Cross multiply
    20,856.84x = 31,273.92 × 7,528.02
  4. Step 4: Simplify right side
    20,856.84x = 235,430,695.24
  5. Step 5: Solve for x
    x = 235,430,695.24/20,856.84
  6. Step 6: Final answer
    x = 11,287.94

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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.