Home / 13,533.36-20,291.81-7,987.97

Finding the Fourth Proportional to 13,533.36, 20,291.81 and 7,987.97

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Solution

The fourth proportional to 13,533.36, 20,291.81 and 7,987.97 is: 11,977.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,533.36 : 20,291.81 = 7,987.97 : x
  2. Step 2: Convert to fraction form
    13,533.36/20,291.81 = 7,987.97/x
  3. Step 3: Cross multiply
    13,533.36x = 20,291.81 × 7,987.97
  4. Step 4: Simplify right side
    13,533.36x = 162,090,228.13
  5. Step 5: Solve for x
    x = 162,090,228.13/13,533.36
  6. Step 6: Final answer
    x = 11,977.09

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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.