Home / 18,875.56-28,313.34-5,728

Finding the Fourth Proportional to 18,875.56, 28,313.34 and 5,728

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Solution

The fourth proportional to 18,875.56, 28,313.34 and 5,728 is: 8,592

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,875.56 : 28,313.34 = 5,728 : x
  2. Step 2: Convert to fraction form
    18,875.56/28,313.34 = 5,728/x
  3. Step 3: Cross multiply
    18,875.56x = 28,313.34 × 5,728
  4. Step 4: Simplify right side
    18,875.56x = 162,178,811.52
  5. Step 5: Solve for x
    x = 162,178,811.52/18,875.56
  6. Step 6: Final answer
    x = 8,592

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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.