Home / 39,591.35-54,636.08-21,686.65

Finding the Fourth Proportional to 39,591.35, 54,636.08 and 21,686.65

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Solution

The fourth proportional to 39,591.35, 54,636.08 and 21,686.65 is: 29,927.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,591.35 : 54,636.08 = 21,686.65 : x
  2. Step 2: Convert to fraction form
    39,591.35/54,636.08 = 21,686.65/x
  3. Step 3: Cross multiply
    39,591.35x = 54,636.08 × 21,686.65
  4. Step 4: Simplify right side
    39,591.35x = 1,184,873,299.31
  5. Step 5: Solve for x
    x = 1,184,873,299.31/39,591.35
  6. Step 6: Final answer
    x = 29,927.58

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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.