Home / 39,063.60-53,907.90-21,158.56

Finding the Fourth Proportional to 39,063.60, 53,907.90 and 21,158.56

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Solution

The fourth proportional to 39,063.60, 53,907.90 and 21,158.56 is: 29,198.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,063.60 : 53,907.90 = 21,158.56 : x
  2. Step 2: Convert to fraction form
    39,063.60/53,907.90 = 21,158.56/x
  3. Step 3: Cross multiply
    39,063.60x = 53,907.90 × 21,158.56
  4. Step 4: Simplify right side
    39,063.60x = 1,140,613,536.62
  5. Step 5: Solve for x
    x = 1,140,613,536.62/39,063.60
  6. Step 6: Final answer
    x = 29,198.88

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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.