Home / 12,419.28-18,622.71-3,984.66

Finding the Fourth Proportional to 12,419.28, 18,622.71 and 3,984.66

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Solution

The fourth proportional to 12,419.28, 18,622.71 and 3,984.66 is: 5,975.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,419.28 : 18,622.71 = 3,984.66 : x
  2. Step 2: Convert to fraction form
    12,419.28/18,622.71 = 3,984.66/x
  3. Step 3: Cross multiply
    12,419.28x = 18,622.71 × 3,984.66
  4. Step 4: Simplify right side
    12,419.28x = 74,205,167.63
  5. Step 5: Solve for x
    x = 74,205,167.63/12,419.28
  6. Step 6: Final answer
    x = 5,975.00

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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.