Home / 13,371.78-20,043.54-7,127.94

Finding the Fourth Proportional to 13,371.78, 20,043.54 and 7,127.94

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Solution

The fourth proportional to 13,371.78, 20,043.54 and 7,127.94 is: 10,684.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,371.78 : 20,043.54 = 7,127.94 : x
  2. Step 2: Convert to fraction form
    13,371.78/20,043.54 = 7,127.94/x
  3. Step 3: Cross multiply
    13,371.78x = 20,043.54 × 7,127.94
  4. Step 4: Simplify right side
    13,371.78x = 142,869,150.51
  5. Step 5: Solve for x
    x = 142,869,150.51/13,371.78
  6. Step 6: Final answer
    x = 10,684.38

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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.