Home / 10,100.25-15,138.50-4,547.09

Finding the Fourth Proportional to 10,100.25, 15,138.50 and 4,547.09

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Solution

The fourth proportional to 10,100.25, 15,138.50 and 4,547.09 is: 6,815.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,100.25 : 15,138.50 = 4,547.09 : x
  2. Step 2: Convert to fraction form
    10,100.25/15,138.50 = 4,547.09/x
  3. Step 3: Cross multiply
    10,100.25x = 15,138.50 × 4,547.09
  4. Step 4: Simplify right side
    10,100.25x = 68,836,121.97
  5. Step 5: Solve for x
    x = 68,836,121.97/10,100.25
  6. Step 6: Final answer
    x = 6,815.29

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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.