Home / 39,423.20-54,403.58-21,518.06

Finding the Fourth Proportional to 39,423.20, 54,403.58 and 21,518.06

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Solution

The fourth proportional to 39,423.20, 54,403.58 and 21,518.06 is: 29,694.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,423.20 : 54,403.58 = 21,518.06 : x
  2. Step 2: Convert to fraction form
    39,423.20/54,403.58 = 21,518.06/x
  3. Step 3: Cross multiply
    39,423.20x = 54,403.58 × 21,518.06
  4. Step 4: Simplify right side
    39,423.20x = 1,170,659,498.65
  5. Step 5: Solve for x
    x = 1,170,659,498.65/39,423.20
  6. Step 6: Final answer
    x = 29,694.68

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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.