Home / 39,358.57-54,314.53-21,453.52

Finding the Fourth Proportional to 39,358.57, 54,314.53 and 21,453.52

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Solution

The fourth proportional to 39,358.57, 54,314.53 and 21,453.52 is: 29,605.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,358.57 : 54,314.53 = 21,453.52 : x
  2. Step 2: Convert to fraction form
    39,358.57/54,314.53 = 21,453.52/x
  3. Step 3: Cross multiply
    39,358.57x = 54,314.53 × 21,453.52
  4. Step 4: Simplify right side
    39,358.57x = 1,165,237,855.65
  5. Step 5: Solve for x
    x = 1,165,237,855.65/39,358.57
  6. Step 6: Final answer
    x = 29,605.70

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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.