Home / 21,329.60-31,970.40-10,241.60

Finding the Fourth Proportional to 21,329.60, 31,970.40 and 10,241.60

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Solution

The fourth proportional to 21,329.60, 31,970.40 and 10,241.60 is: 15,350.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,329.60 : 31,970.40 = 10,241.60 : x
  2. Step 2: Convert to fraction form
    21,329.60/31,970.40 = 10,241.60/x
  3. Step 3: Cross multiply
    21,329.60x = 31,970.40 × 10,241.60
  4. Step 4: Simplify right side
    21,329.60x = 327,428,048.64
  5. Step 5: Solve for x
    x = 327,428,048.64/21,329.60
  6. Step 6: Final answer
    x = 15,350.88

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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.