Home / 14,938.41-20,615.99-8,650.78

Finding the Fourth Proportional to 14,938.41, 20,615.99 and 8,650.78

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Solution

The fourth proportional to 14,938.41, 20,615.99 and 8,650.78 is: 11,938.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,938.41 : 20,615.99 = 8,650.78 : x
  2. Step 2: Convert to fraction form
    14,938.41/20,615.99 = 8,650.78/x
  3. Step 3: Cross multiply
    14,938.41x = 20,615.99 × 8,650.78
  4. Step 4: Simplify right side
    14,938.41x = 178,344,393.97
  5. Step 5: Solve for x
    x = 178,344,393.97/14,938.41
  6. Step 6: Final answer
    x = 11,938.65

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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.