Home / 18,813.48-25,963.78-10,857.16

Finding the Fourth Proportional to 18,813.48, 25,963.78 and 10,857.16

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Solution

The fourth proportional to 18,813.48, 25,963.78 and 10,857.16 is: 14,983.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,813.48 : 25,963.78 = 10,857.16 : x
  2. Step 2: Convert to fraction form
    18,813.48/25,963.78 = 10,857.16/x
  3. Step 3: Cross multiply
    18,813.48x = 25,963.78 × 10,857.16
  4. Step 4: Simplify right side
    18,813.48x = 281,892,913.66
  5. Step 5: Solve for x
    x = 281,892,913.66/18,813.48
  6. Step 6: Final answer
    x = 14,983.56

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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.