Home / 39,113.18-53,976.12-21,885.56

Finding the Fourth Proportional to 39,113.18, 53,976.12 and 21,885.56

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Solution

The fourth proportional to 39,113.18, 53,976.12 and 21,885.56 is: 30,202.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,113.18 : 53,976.12 = 21,885.56 : x
  2. Step 2: Convert to fraction form
    39,113.18/53,976.12 = 21,885.56/x
  3. Step 3: Cross multiply
    39,113.18x = 53,976.12 × 21,885.56
  4. Step 4: Simplify right side
    39,113.18x = 1,181,297,612.83
  5. Step 5: Solve for x
    x = 1,181,297,612.83/39,113.18
  6. Step 6: Final answer
    x = 30,202.03

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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.