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Finding the Fourth Proportional to 18,365, 25,349.70 and 10,811.24

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Solution

The fourth proportional to 18,365, 25,349.70 and 10,811.24 is: 14,923.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,365 : 25,349.70 = 10,811.24 : x
  2. Step 2: Convert to fraction form
    18,365/25,349.70 = 10,811.24/x
  3. Step 3: Cross multiply
    18,365x = 25,349.70 × 10,811.24
  4. Step 4: Simplify right side
    18,365x = 274,061,690.63
  5. Step 5: Solve for x
    x = 274,061,690.63/18,365
  6. Step 6: Final answer
    x = 14,923.04

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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.