Home / 39,670.48-54,744.92-21,521.15

Finding the Fourth Proportional to 39,670.48, 54,744.92 and 21,521.15

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Solution

The fourth proportional to 39,670.48, 54,744.92 and 21,521.15 is: 29,699.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,670.48 : 54,744.92 = 21,521.15 : x
  2. Step 2: Convert to fraction form
    39,670.48/54,744.92 = 21,521.15/x
  3. Step 3: Cross multiply
    39,670.48x = 54,744.92 × 21,521.15
  4. Step 4: Simplify right side
    39,670.48x = 1,178,173,361.33
  5. Step 5: Solve for x
    x = 1,178,173,361.33/39,670.48
  6. Step 6: Final answer
    x = 29,699.00

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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.