Home / 39,321.62-54,263.56-21,416.57

Finding the Fourth Proportional to 39,321.62, 54,263.56 and 21,416.57

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Solution

The fourth proportional to 39,321.62, 54,263.56 and 21,416.57 is: 29,554.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,321.62 : 54,263.56 = 21,416.57 : x
  2. Step 2: Convert to fraction form
    39,321.62/54,263.56 = 21,416.57/x
  3. Step 3: Cross multiply
    39,321.62x = 54,263.56 × 21,416.57
  4. Step 4: Simplify right side
    39,321.62x = 1,162,139,277.65
  5. Step 5: Solve for x
    x = 1,162,139,277.65/39,321.62
  6. Step 6: Final answer
    x = 29,554.72

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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.