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Finding the Fourth Proportional to 18,703.36, 25,825.80 and 17,857.72

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Solution

The fourth proportional to 18,703.36, 25,825.80 and 17,857.72 is: 24,658.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703.36 : 25,825.80 = 17,857.72 : x
  2. Step 2: Convert to fraction form
    18,703.36/25,825.80 = 17,857.72/x
  3. Step 3: Cross multiply
    18,703.36x = 25,825.80 × 17,857.72
  4. Step 4: Simplify right side
    18,703.36x = 461,189,905.18
  5. Step 5: Solve for x
    x = 461,189,905.18/18,703.36
  6. Step 6: Final answer
    x = 24,658.13

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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.