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Finding the Fourth Proportional to 18,273.61, 25,217.40 and 10,318.42

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Solution

The fourth proportional to 18,273.61, 25,217.40 and 10,318.42 is: 14,239.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,273.61 : 25,217.40 = 10,318.42 : x
  2. Step 2: Convert to fraction form
    18,273.61/25,217.40 = 10,318.42/x
  3. Step 3: Cross multiply
    18,273.61x = 25,217.40 × 10,318.42
  4. Step 4: Simplify right side
    18,273.61x = 260,203,724.51
  5. Step 5: Solve for x
    x = 260,203,724.51/18,273.61
  6. Step 6: Final answer
    x = 14,239.32

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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.