Home / 15,388.64-23,090.16-7,989.08

Finding the Fourth Proportional to 15,388.64, 23,090.16 and 7,989.08

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Solution

The fourth proportional to 15,388.64, 23,090.16 and 7,989.08 is: 11,987.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,388.64 : 23,090.16 = 7,989.08 : x
  2. Step 2: Convert to fraction form
    15,388.64/23,090.16 = 7,989.08/x
  3. Step 3: Cross multiply
    15,388.64x = 23,090.16 × 7,989.08
  4. Step 4: Simplify right side
    15,388.64x = 184,469,135.45
  5. Step 5: Solve for x
    x = 184,469,135.45/15,388.64
  6. Step 6: Final answer
    x = 11,987.36

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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.