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Finding the Fourth Proportional to 18,801.48, 25,945.30 and 11,243.30

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Solution

The fourth proportional to 18,801.48, 25,945.30 and 11,243.30 is: 15,515.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,801.48 : 25,945.30 = 11,243.30 : x
  2. Step 2: Convert to fraction form
    18,801.48/25,945.30 = 11,243.30/x
  3. Step 3: Cross multiply
    18,801.48x = 25,945.30 × 11,243.30
  4. Step 4: Simplify right side
    18,801.48x = 291,710,828.24
  5. Step 5: Solve for x
    x = 291,710,828.24/18,801.48
  6. Step 6: Final answer
    x = 15,515.31

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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.