Home / 15,775.11-21,769.43-8,701.38

Finding the Fourth Proportional to 15,775.11, 21,769.43 and 8,701.38

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Solution

The fourth proportional to 15,775.11, 21,769.43 and 8,701.38 is: 12,007.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,775.11 : 21,769.43 = 8,701.38 : x
  2. Step 2: Convert to fraction form
    15,775.11/21,769.43 = 8,701.38/x
  3. Step 3: Cross multiply
    15,775.11x = 21,769.43 × 8,701.38
  4. Step 4: Simplify right side
    15,775.11x = 189,424,039.31
  5. Step 5: Solve for x
    x = 189,424,039.31/15,775.11
  6. Step 6: Final answer
    x = 12,007.78

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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.