Home / 38,530.45-53,171.82-21,534.68

Finding the Fourth Proportional to 38,530.45, 53,171.82 and 21,534.68

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Solution

The fourth proportional to 38,530.45, 53,171.82 and 21,534.68 is: 29,717.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,530.45 : 53,171.82 = 21,534.68 : x
  2. Step 2: Convert to fraction form
    38,530.45/53,171.82 = 21,534.68/x
  3. Step 3: Cross multiply
    38,530.45x = 53,171.82 × 21,534.68
  4. Step 4: Simplify right side
    38,530.45x = 1,145,038,128.72
  5. Step 5: Solve for x
    x = 1,145,038,128.72/38,530.45
  6. Step 6: Final answer
    x = 29,717.75

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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.