Home / 39,576.60-54,615.70-21,672.72

Finding the Fourth Proportional to 39,576.60, 54,615.70 and 21,672.72

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Solution

The fourth proportional to 39,576.60, 54,615.70 and 21,672.72 is: 29,908.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,576.60 : 54,615.70 = 21,672.72 : x
  2. Step 2: Convert to fraction form
    39,576.60/54,615.70 = 21,672.72/x
  3. Step 3: Cross multiply
    39,576.60x = 54,615.70 × 21,672.72
  4. Step 4: Simplify right side
    39,576.60x = 1,183,670,773.70
  5. Step 5: Solve for x
    x = 1,183,670,773.70/39,576.60
  6. Step 6: Final answer
    x = 29,908.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.