Home / 15,007.78-22,511.40-5,147.11

Finding the Fourth Proportional to 15,007.78, 22,511.40 and 5,147.11

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Solution

The fourth proportional to 15,007.78, 22,511.40 and 5,147.11 is: 7,720.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,007.78 : 22,511.40 = 5,147.11 : x
  2. Step 2: Convert to fraction form
    15,007.78/22,511.40 = 5,147.11/x
  3. Step 3: Cross multiply
    15,007.78x = 22,511.40 × 5,147.11
  4. Step 4: Simplify right side
    15,007.78x = 115,868,652.05
  5. Step 5: Solve for x
    x = 115,868,652.05/15,007.78
  6. Step 6: Final answer
    x = 7,720.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.