Home / 38,512.51-53,146.90-21,519.68

Finding the Fourth Proportional to 38,512.51, 53,146.90 and 21,519.68

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Solution

The fourth proportional to 38,512.51, 53,146.90 and 21,519.68 is: 29,696.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,512.51 : 53,146.90 = 21,519.68 : x
  2. Step 2: Convert to fraction form
    38,512.51/53,146.90 = 21,519.68/x
  3. Step 3: Cross multiply
    38,512.51x = 53,146.90 × 21,519.68
  4. Step 4: Simplify right side
    38,512.51x = 1,143,704,551.11
  5. Step 5: Solve for x
    x = 1,143,704,551.11/38,512.51
  6. Step 6: Final answer
    x = 29,696.96

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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.