Home / 20,887.64-31,341.48-9,792.52

Finding the Fourth Proportional to 20,887.64, 31,341.48 and 9,792.52

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Solution

The fourth proportional to 20,887.64, 31,341.48 and 9,792.52 is: 14,693.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887.64 : 31,341.48 = 9,792.52 : x
  2. Step 2: Convert to fraction form
    20,887.64/31,341.48 = 9,792.52/x
  3. Step 3: Cross multiply
    20,887.64x = 31,341.48 × 9,792.52
  4. Step 4: Simplify right side
    20,887.64x = 306,912,069.73
  5. Step 5: Solve for x
    x = 306,912,069.73/20,887.64
  6. Step 6: Final answer
    x = 14,693.48

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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.