Home / 18,945.18-28,410.93-5,614.20

Finding the Fourth Proportional to 18,945.18, 28,410.93 and 5,614.20

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Solution

The fourth proportional to 18,945.18, 28,410.93 and 5,614.20 is: 8,419.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,945.18 : 28,410.93 = 5,614.20 : x
  2. Step 2: Convert to fraction form
    18,945.18/28,410.93 = 5,614.20/x
  3. Step 3: Cross multiply
    18,945.18x = 28,410.93 × 5,614.20
  4. Step 4: Simplify right side
    18,945.18x = 159,504,643.21
  5. Step 5: Solve for x
    x = 159,504,643.21/18,945.18
  6. Step 6: Final answer
    x = 8,419.27

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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.