Home / 13,987.54-20,982.47-6,090.31

Finding the Fourth Proportional to 13,987.54, 20,982.47 and 6,090.31

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Solution

The fourth proportional to 13,987.54, 20,982.47 and 6,090.31 is: 9,135.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.54 : 20,982.47 = 6,090.31 : x
  2. Step 2: Convert to fraction form
    13,987.54/20,982.47 = 6,090.31/x
  3. Step 3: Cross multiply
    13,987.54x = 20,982.47 × 6,090.31
  4. Step 4: Simplify right side
    13,987.54x = 127,789,746.87
  5. Step 5: Solve for x
    x = 127,789,746.87/13,987.54
  6. Step 6: Final answer
    x = 9,135.97

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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.