Home / 13,349.76-20,018.88-5,136

Finding the Fourth Proportional to 13,349.76, 20,018.88 and 5,136

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Solution

The fourth proportional to 13,349.76, 20,018.88 and 5,136 is: 7,701.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,349.76 : 20,018.88 = 5,136 : x
  2. Step 2: Convert to fraction form
    13,349.76/20,018.88 = 5,136/x
  3. Step 3: Cross multiply
    13,349.76x = 20,018.88 × 5,136
  4. Step 4: Simplify right side
    13,349.76x = 102,816,967.68
  5. Step 5: Solve for x
    x = 102,816,967.68/13,349.76
  6. Step 6: Final answer
    x = 7,701.78

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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.