Home / 13,186.47-19,784.28-7,644.63

Finding the Fourth Proportional to 13,186.47, 19,784.28 and 7,644.63

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Solution

The fourth proportional to 13,186.47, 19,784.28 and 7,644.63 is: 11,469.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.47 : 19,784.28 = 7,644.63 : x
  2. Step 2: Convert to fraction form
    13,186.47/19,784.28 = 7,644.63/x
  3. Step 3: Cross multiply
    13,186.47x = 19,784.28 × 7,644.63
  4. Step 4: Simplify right side
    13,186.47x = 151,243,500.42
  5. Step 5: Solve for x
    x = 151,243,500.42/13,186.47
  6. Step 6: Final answer
    x = 11,469.60

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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.