Home / 39,039.85-53,874.84-21,135.16

Finding the Fourth Proportional to 39,039.85, 53,874.84 and 21,135.16

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Solution

The fourth proportional to 39,039.85, 53,874.84 and 21,135.16 is: 29,166.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,039.85 : 53,874.84 = 21,135.16 : x
  2. Step 2: Convert to fraction form
    39,039.85/53,874.84 = 21,135.16/x
  3. Step 3: Cross multiply
    39,039.85x = 53,874.84 × 21,135.16
  4. Step 4: Simplify right side
    39,039.85x = 1,138,653,363.37
  5. Step 5: Solve for x
    x = 1,138,653,363.37/39,039.85
  6. Step 6: Final answer
    x = 29,166.44

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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.