Home / 39,483.20-54,486.84-21,578.21

Finding the Fourth Proportional to 39,483.20, 54,486.84 and 21,578.21

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Solution

The fourth proportional to 39,483.20, 54,486.84 and 21,578.21 is: 29,777.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,483.20 : 54,486.84 = 21,578.21 : x
  2. Step 2: Convert to fraction form
    39,483.20/54,486.84 = 21,578.21/x
  3. Step 3: Cross multiply
    39,483.20x = 54,486.84 × 21,578.21
  4. Step 4: Simplify right side
    39,483.20x = 1,175,728,475.76
  5. Step 5: Solve for x
    x = 1,175,728,475.76/39,483.20
  6. Step 6: Final answer
    x = 29,777.94

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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.