Home / 18,289.06-25,238.85-9,905.56

Finding the Fourth Proportional to 18,289.06, 25,238.85 and 9,905.56

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Solution

The fourth proportional to 18,289.06, 25,238.85 and 9,905.56 is: 13,669.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,289.06 : 25,238.85 = 9,905.56 : x
  2. Step 2: Convert to fraction form
    18,289.06/25,238.85 = 9,905.56/x
  3. Step 3: Cross multiply
    18,289.06x = 25,238.85 × 9,905.56
  4. Step 4: Simplify right side
    18,289.06x = 250,004,943.01
  5. Step 5: Solve for x
    x = 250,004,943.01/18,289.06
  6. Step 6: Final answer
    x = 13,669.64

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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.