Home / 10,078.89-15,121.80-4,536.12

Finding the Fourth Proportional to 10,078.89, 15,121.80 and 4,536.12

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Solution

The fourth proportional to 10,078.89, 15,121.80 and 4,536.12 is: 6,805.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,078.89 : 15,121.80 = 4,536.12 : x
  2. Step 2: Convert to fraction form
    10,078.89/15,121.80 = 4,536.12/x
  3. Step 3: Cross multiply
    10,078.89x = 15,121.80 × 4,536.12
  4. Step 4: Simplify right side
    10,078.89x = 68,594,299.42
  5. Step 5: Solve for x
    x = 68,594,299.42/10,078.89
  6. Step 6: Final answer
    x = 6,805.74

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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.