Home / 39,570.45-54,607.11-21,665.31

Finding the Fourth Proportional to 39,570.45, 54,607.11 and 21,665.31

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Solution

The fourth proportional to 39,570.45, 54,607.11 and 21,665.31 is: 29,898.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,570.45 : 54,607.11 = 21,665.31 : x
  2. Step 2: Convert to fraction form
    39,570.45/54,607.11 = 21,665.31/x
  3. Step 3: Cross multiply
    39,570.45x = 54,607.11 × 21,665.31
  4. Step 4: Simplify right side
    39,570.45x = 1,183,079,966.35
  5. Step 5: Solve for x
    x = 1,183,079,966.35/39,570.45
  6. Step 6: Final answer
    x = 29,898.07

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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.