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Finding the Fourth Proportional to 18,471.36, 27,662.80 and 13,460.30

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Solution

The fourth proportional to 18,471.36, 27,662.80 and 13,460.30 is: 20,158.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,471.36 : 27,662.80 = 13,460.30 : x
  2. Step 2: Convert to fraction form
    18,471.36/27,662.80 = 13,460.30/x
  3. Step 3: Cross multiply
    18,471.36x = 27,662.80 × 13,460.30
  4. Step 4: Simplify right side
    18,471.36x = 372,349,586.84
  5. Step 5: Solve for x
    x = 372,349,586.84/18,471.36
  6. Step 6: Final answer
    x = 20,158.21

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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.