Home / 39,589.92-54,635.72-21,686.49

Finding the Fourth Proportional to 39,589.92, 54,635.72 and 21,686.49

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Solution

The fourth proportional to 39,589.92, 54,635.72 and 21,686.49 is: 29,928.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,589.92 : 54,635.72 = 21,686.49 : x
  2. Step 2: Convert to fraction form
    39,589.92/54,635.72 = 21,686.49/x
  3. Step 3: Cross multiply
    39,589.92x = 54,635.72 × 21,686.49
  4. Step 4: Simplify right side
    39,589.92x = 1,184,856,886.99
  5. Step 5: Solve for x
    x = 1,184,856,886.99/39,589.92
  6. Step 6: Final answer
    x = 29,928.25

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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.