Home / 20,825.64-31,224.54-11,470.08

Finding the Fourth Proportional to 20,825.64, 31,224.54 and 11,470.08

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Solution

The fourth proportional to 20,825.64, 31,224.54 and 11,470.08 is: 17,197.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,825.64 : 31,224.54 = 11,470.08 : x
  2. Step 2: Convert to fraction form
    20,825.64/31,224.54 = 11,470.08/x
  3. Step 3: Cross multiply
    20,825.64x = 31,224.54 × 11,470.08
  4. Step 4: Simplify right side
    20,825.64x = 358,147,971.76
  5. Step 5: Solve for x
    x = 358,147,971.76/20,825.64
  6. Step 6: Final answer
    x = 17,197.45

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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.