Home / 38,400.49-52,986.58-21,630.25

Finding the Fourth Proportional to 38,400.49, 52,986.58 and 21,630.25

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Solution

The fourth proportional to 38,400.49, 52,986.58 and 21,630.25 is: 29,846.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,400.49 : 52,986.58 = 21,630.25 : x
  2. Step 2: Convert to fraction form
    38,400.49/52,986.58 = 21,630.25/x
  3. Step 3: Cross multiply
    38,400.49x = 52,986.58 × 21,630.25
  4. Step 4: Simplify right side
    38,400.49x = 1,146,112,972.05
  5. Step 5: Solve for x
    x = 1,146,112,972.05/38,400.49
  6. Step 6: Final answer
    x = 29,846.31

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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.