Home / 15,072.40-20,795.70-8,783.56

Finding the Fourth Proportional to 15,072.40, 20,795.70 and 8,783.56

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Solution

The fourth proportional to 15,072.40, 20,795.70 and 8,783.56 is: 12,118.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,072.40 : 20,795.70 = 8,783.56 : x
  2. Step 2: Convert to fraction form
    15,072.40/20,795.70 = 8,783.56/x
  3. Step 3: Cross multiply
    15,072.40x = 20,795.70 × 8,783.56
  4. Step 4: Simplify right side
    15,072.40x = 182,660,278.69
  5. Step 5: Solve for x
    x = 182,660,278.69/15,072.40
  6. Step 6: Final answer
    x = 12,118.86

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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.