Home / 38,634.52-53,311.20-21,636.40

Finding the Fourth Proportional to 38,634.52, 53,311.20 and 21,636.40

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Solution

The fourth proportional to 38,634.52, 53,311.20 and 21,636.40 is: 29,855.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,634.52 : 53,311.20 = 21,636.40 : x
  2. Step 2: Convert to fraction form
    38,634.52/53,311.20 = 21,636.40/x
  3. Step 3: Cross multiply
    38,634.52x = 53,311.20 × 21,636.40
  4. Step 4: Simplify right side
    38,634.52x = 1,153,462,447.68
  5. Step 5: Solve for x
    x = 1,153,462,447.68/38,634.52
  6. Step 6: Final answer
    x = 29,855.75

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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.