Home / 38,855.76-53,619.75-21,860.96

Finding the Fourth Proportional to 38,855.76, 53,619.75 and 21,860.96

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Solution

The fourth proportional to 38,855.76, 53,619.75 and 21,860.96 is: 30,167.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,855.76 : 53,619.75 = 21,860.96 : x
  2. Step 2: Convert to fraction form
    38,855.76/53,619.75 = 21,860.96/x
  3. Step 3: Cross multiply
    38,855.76x = 53,619.75 × 21,860.96
  4. Step 4: Simplify right side
    38,855.76x = 1,172,178,941.86
  5. Step 5: Solve for x
    x = 1,172,178,941.86/38,855.76
  6. Step 6: Final answer
    x = 30,167.44

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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.