Home / 38,424.28-53,025.41-21,428.54

Finding the Fourth Proportional to 38,424.28, 53,025.41 and 21,428.54

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Solution

The fourth proportional to 38,424.28, 53,025.41 and 21,428.54 is: 29,571.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,424.28 : 53,025.41 = 21,428.54 : x
  2. Step 2: Convert to fraction form
    38,424.28/53,025.41 = 21,428.54/x
  3. Step 3: Cross multiply
    38,424.28x = 53,025.41 × 21,428.54
  4. Step 4: Simplify right side
    38,424.28x = 1,136,257,288.60
  5. Step 5: Solve for x
    x = 1,136,257,288.60/38,424.28
  6. Step 6: Final answer
    x = 29,571.33

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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.