Home / 38,785.11-53,521.64-21,556.68

Finding the Fourth Proportional to 38,785.11, 53,521.64 and 21,556.68

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Solution

The fourth proportional to 38,785.11, 53,521.64 and 21,556.68 is: 29,747.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,785.11 : 53,521.64 = 21,556.68 : x
  2. Step 2: Convert to fraction form
    38,785.11/53,521.64 = 21,556.68/x
  3. Step 3: Cross multiply
    38,785.11x = 53,521.64 × 21,556.68
  4. Step 4: Simplify right side
    38,785.11x = 1,153,748,638.90
  5. Step 5: Solve for x
    x = 1,153,748,638.90/38,785.11
  6. Step 6: Final answer
    x = 29,747.21

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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.