Home / 18,289.80-25,239.72-9,906.24

Finding the Fourth Proportional to 18,289.80, 25,239.72 and 9,906.24

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Solution

The fourth proportional to 18,289.80, 25,239.72 and 9,906.24 is: 13,670.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,289.80 : 25,239.72 = 9,906.24 : x
  2. Step 2: Convert to fraction form
    18,289.80/25,239.72 = 9,906.24/x
  3. Step 3: Cross multiply
    18,289.80x = 25,239.72 × 9,906.24
  4. Step 4: Simplify right side
    18,289.80x = 250,030,723.85
  5. Step 5: Solve for x
    x = 250,030,723.85/18,289.80
  6. Step 6: Final answer
    x = 13,670.50

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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.