Home / 39,221.64-54,129.06-22,455.72

Finding the Fourth Proportional to 39,221.64, 54,129.06 and 22,455.72

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Solution

The fourth proportional to 39,221.64, 54,129.06 and 22,455.72 is: 30,990.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,221.64 : 54,129.06 = 22,455.72 : x
  2. Step 2: Convert to fraction form
    39,221.64/54,129.06 = 22,455.72/x
  3. Step 3: Cross multiply
    39,221.64x = 54,129.06 × 22,455.72
  4. Step 4: Simplify right side
    39,221.64x = 1,215,507,015.22
  5. Step 5: Solve for x
    x = 1,215,507,015.22/39,221.64
  6. Step 6: Final answer
    x = 30,990.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.