Home / 13,986.78-19,296.87-8,953.86

Finding the Fourth Proportional to 13,986.78, 19,296.87 and 8,953.86

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Solution

The fourth proportional to 13,986.78, 19,296.87 and 8,953.86 is: 12,353.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.78 : 19,296.87 = 8,953.86 : x
  2. Step 2: Convert to fraction form
    13,986.78/19,296.87 = 8,953.86/x
  3. Step 3: Cross multiply
    13,986.78x = 19,296.87 × 8,953.86
  4. Step 4: Simplify right side
    13,986.78x = 172,781,472.42
  5. Step 5: Solve for x
    x = 172,781,472.42/13,986.78
  6. Step 6: Final answer
    x = 12,353.20

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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.