Home / 18,288.78-25,250.84-11,485.70

Finding the Fourth Proportional to 18,288.78, 25,250.84 and 11,485.70

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Solution

The fourth proportional to 18,288.78, 25,250.84 and 11,485.70 is: 15,858.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,288.78 : 25,250.84 = 11,485.70 : x
  2. Step 2: Convert to fraction form
    18,288.78/25,250.84 = 11,485.70/x
  3. Step 3: Cross multiply
    18,288.78x = 25,250.84 × 11,485.70
  4. Step 4: Simplify right side
    18,288.78x = 290,023,572.99
  5. Step 5: Solve for x
    x = 290,023,572.99/18,288.78
  6. Step 6: Final answer
    x = 15,858.01

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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.