Home / 18,319.72-27,455.28-9,978.34

Finding the Fourth Proportional to 18,319.72, 27,455.28 and 9,978.34

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Solution

The fourth proportional to 18,319.72, 27,455.28 and 9,978.34 is: 14,954.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,319.72 : 27,455.28 = 9,978.34 : x
  2. Step 2: Convert to fraction form
    18,319.72/27,455.28 = 9,978.34/x
  3. Step 3: Cross multiply
    18,319.72x = 27,455.28 × 9,978.34
  4. Step 4: Simplify right side
    18,319.72x = 273,958,118.64
  5. Step 5: Solve for x
    x = 273,958,118.64/18,319.72
  6. Step 6: Final answer
    x = 14,954.27

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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.