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Finding the Fourth Proportional to 13,897.18, 20,825.52 and 10,551.10

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Solution

The fourth proportional to 13,897.18, 20,825.52 and 10,551.10 is: 15,811.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,897.18 : 20,825.52 = 10,551.10 : x
  2. Step 2: Convert to fraction form
    13,897.18/20,825.52 = 10,551.10/x
  3. Step 3: Cross multiply
    13,897.18x = 20,825.52 × 10,551.10
  4. Step 4: Simplify right side
    13,897.18x = 219,732,144.07
  5. Step 5: Solve for x
    x = 219,732,144.07/13,897.18
  6. Step 6: Final answer
    x = 15,811.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.