Home / 28,606.28-42,918.24-12,824.60

Finding the Fourth Proportional to 28,606.28, 42,918.24 and 12,824.60

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Solution

The fourth proportional to 28,606.28, 42,918.24 and 12,824.60 is: 19,240.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,606.28 : 42,918.24 = 12,824.60 : x
  2. Step 2: Convert to fraction form
    28,606.28/42,918.24 = 12,824.60/x
  3. Step 3: Cross multiply
    28,606.28x = 42,918.24 × 12,824.60
  4. Step 4: Simplify right side
    28,606.28x = 550,409,260.70
  5. Step 5: Solve for x
    x = 550,409,260.70/28,606.28
  6. Step 6: Final answer
    x = 19,240.85

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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.