Home / 39,432.88-54,418.20-21,528.64

Finding the Fourth Proportional to 39,432.88, 54,418.20 and 21,528.64

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Solution

The fourth proportional to 39,432.88, 54,418.20 and 21,528.64 is: 29,709.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,432.88 : 54,418.20 = 21,528.64 : x
  2. Step 2: Convert to fraction form
    39,432.88/54,418.20 = 21,528.64/x
  3. Step 3: Cross multiply
    39,432.88x = 54,418.20 × 21,528.64
  4. Step 4: Simplify right side
    39,432.88x = 1,171,549,783.43
  5. Step 5: Solve for x
    x = 1,171,549,783.43/39,432.88
  6. Step 6: Final answer
    x = 29,709.97

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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.