Home / 18,665.53-25,749.35-11,945.77

Finding the Fourth Proportional to 18,665.53, 25,749.35 and 11,945.77

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Solution

The fourth proportional to 18,665.53, 25,749.35 and 11,945.77 is: 16,479.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,665.53 : 25,749.35 = 11,945.77 : x
  2. Step 2: Convert to fraction form
    18,665.53/25,749.35 = 11,945.77/x
  3. Step 3: Cross multiply
    18,665.53x = 25,749.35 × 11,945.77
  4. Step 4: Simplify right side
    18,665.53x = 307,595,812.75
  5. Step 5: Solve for x
    x = 307,595,812.75/18,665.53
  6. Step 6: Final answer
    x = 16,479.35

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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.