Home / 13,455.36-20,190.48-5,664

Finding the Fourth Proportional to 13,455.36, 20,190.48 and 5,664

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Solution

The fourth proportional to 13,455.36, 20,190.48 and 5,664 is: 8,499.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.36 : 20,190.48 = 5,664 : x
  2. Step 2: Convert to fraction form
    13,455.36/20,190.48 = 5,664/x
  3. Step 3: Cross multiply
    13,455.36x = 20,190.48 × 5,664
  4. Step 4: Simplify right side
    13,455.36x = 114,358,878.72
  5. Step 5: Solve for x
    x = 114,358,878.72/13,455.36
  6. Step 6: Final answer
    x = 8,499.13

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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.