Home / 15,072.79-20,796.21-8,783.95

Finding the Fourth Proportional to 15,072.79, 20,796.21 and 8,783.95

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Solution

The fourth proportional to 15,072.79, 20,796.21 and 8,783.95 is: 12,119.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,072.79 : 20,796.21 = 8,783.95 : x
  2. Step 2: Convert to fraction form
    15,072.79/20,796.21 = 8,783.95/x
  3. Step 3: Cross multiply
    15,072.79x = 20,796.21 × 8,783.95
  4. Step 4: Simplify right side
    15,072.79x = 182,672,868.83
  5. Step 5: Solve for x
    x = 182,672,868.83/15,072.79
  6. Step 6: Final answer
    x = 12,119.38

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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.