Home / 38,634.51-53,311.21-21,636.39

Finding the Fourth Proportional to 38,634.51, 53,311.21 and 21,636.39

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Solution

The fourth proportional to 38,634.51, 53,311.21 and 21,636.39 is: 29,855.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,634.51 : 53,311.21 = 21,636.39 : x
  2. Step 2: Convert to fraction form
    38,634.51/53,311.21 = 21,636.39/x
  3. Step 3: Cross multiply
    38,634.51x = 53,311.21 × 21,636.39
  4. Step 4: Simplify right side
    38,634.51x = 1,153,462,130.93
  5. Step 5: Solve for x
    x = 1,153,462,130.93/38,634.51
  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.