Home / 38,245.92-52,784.64-21,480

Finding the Fourth Proportional to 38,245.92, 52,784.64 and 21,480

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Solution

The fourth proportional to 38,245.92, 52,784.64 and 21,480 is: 29,645.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,245.92 : 52,784.64 = 21,480 : x
  2. Step 2: Convert to fraction form
    38,245.92/52,784.64 = 21,480/x
  3. Step 3: Cross multiply
    38,245.92x = 52,784.64 × 21,480
  4. Step 4: Simplify right side
    38,245.92x = 1,133,814,067.20
  5. Step 5: Solve for x
    x = 1,133,814,067.20/38,245.92
  6. Step 6: Final answer
    x = 29,645.36

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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.