Home / 13,818.90-19,076.56-8,151.86

Finding the Fourth Proportional to 13,818.90, 19,076.56 and 8,151.86

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Solution

The fourth proportional to 13,818.90, 19,076.56 and 8,151.86 is: 11,253.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,818.90 : 19,076.56 = 8,151.86 : x
  2. Step 2: Convert to fraction form
    13,818.90/19,076.56 = 8,151.86/x
  3. Step 3: Cross multiply
    13,818.90x = 19,076.56 × 8,151.86
  4. Step 4: Simplify right side
    13,818.90x = 155,509,446.40
  5. Step 5: Solve for x
    x = 155,509,446.40/13,818.90
  6. Step 6: Final answer
    x = 11,253.39

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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.