Home / 21,179.84-31,773.28-7,325.60

Finding the Fourth Proportional to 21,179.84, 31,773.28 and 7,325.60

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Solution

The fourth proportional to 21,179.84, 31,773.28 and 7,325.60 is: 10,989.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,179.84 : 31,773.28 = 7,325.60 : x
  2. Step 2: Convert to fraction form
    21,179.84/31,773.28 = 7,325.60/x
  3. Step 3: Cross multiply
    21,179.84x = 31,773.28 × 7,325.60
  4. Step 4: Simplify right side
    21,179.84x = 232,758,339.97
  5. Step 5: Solve for x
    x = 232,758,339.97/21,179.84
  6. Step 6: Final answer
    x = 10,989.62

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1.5x scale

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.