Home / 39,518.08-54,534.72-21,612.80

Finding the Fourth Proportional to 39,518.08, 54,534.72 and 21,612.80

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Solution

The fourth proportional to 39,518.08, 54,534.72 and 21,612.80 is: 29,825.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,518.08 : 54,534.72 = 21,612.80 : x
  2. Step 2: Convert to fraction form
    39,518.08/54,534.72 = 21,612.80/x
  3. Step 3: Cross multiply
    39,518.08x = 54,534.72 × 21,612.80
  4. Step 4: Simplify right side
    39,518.08x = 1,178,647,996.42
  5. Step 5: Solve for x
    x = 1,178,647,996.42/39,518.08
  6. Step 6: Final answer
    x = 29,825.54

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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.