Home / 39,126.87-53,994.90-21,899.31

Finding the Fourth Proportional to 39,126.87, 53,994.90 and 21,899.31

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Solution

The fourth proportional to 39,126.87, 53,994.90 and 21,899.31 is: 30,220.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,126.87 : 53,994.90 = 21,899.31 : x
  2. Step 2: Convert to fraction form
    39,126.87/53,994.90 = 21,899.31/x
  3. Step 3: Cross multiply
    39,126.87x = 53,994.90 × 21,899.31
  4. Step 4: Simplify right side
    39,126.87x = 1,182,451,236.88
  5. Step 5: Solve for x
    x = 1,182,451,236.88/39,126.87
  6. Step 6: Final answer
    x = 30,220.95

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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.