Home / 39,404.96-54,378-21,500.48

Finding the Fourth Proportional to 39,404.96, 54,378 and 21,500.48

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Solution

The fourth proportional to 39,404.96, 54,378 and 21,500.48 is: 29,670.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,404.96 : 54,378 = 21,500.48 : x
  2. Step 2: Convert to fraction form
    39,404.96/54,378 = 21,500.48/x
  3. Step 3: Cross multiply
    39,404.96x = 54,378 × 21,500.48
  4. Step 4: Simplify right side
    39,404.96x = 1,169,153,101.44
  5. Step 5: Solve for x
    x = 1,169,153,101.44/39,404.96
  6. Step 6: Final answer
    x = 29,670.20

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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.