Home / 39,580.92-54,621.74-21,431.84

Finding the Fourth Proportional to 39,580.92, 54,621.74 and 21,431.84

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Solution

The fourth proportional to 39,580.92, 54,621.74 and 21,431.84 is: 29,575.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,580.92 : 54,621.74 = 21,431.84 : x
  2. Step 2: Convert to fraction form
    39,580.92/54,621.74 = 21,431.84/x
  3. Step 3: Cross multiply
    39,580.92x = 54,621.74 × 21,431.84
  4. Step 4: Simplify right side
    39,580.92x = 1,170,644,392.20
  5. Step 5: Solve for x
    x = 1,170,644,392.20/39,580.92
  6. Step 6: Final answer
    x = 29,575.98

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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.