Home / 13,987.36-20,982.12-5,663.44

Finding the Fourth Proportional to 13,987.36, 20,982.12 and 5,663.44

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Solution

The fourth proportional to 13,987.36, 20,982.12 and 5,663.44 is: 8,495.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.36 : 20,982.12 = 5,663.44 : x
  2. Step 2: Convert to fraction form
    13,987.36/20,982.12 = 5,663.44/x
  3. Step 3: Cross multiply
    13,987.36x = 20,982.12 × 5,663.44
  4. Step 4: Simplify right side
    13,987.36x = 118,830,977.69
  5. Step 5: Solve for x
    x = 118,830,977.69/13,987.36
  6. Step 6: Final answer
    x = 8,495.60

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1.5x scale

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.