Home / 38,991.42-53,807.88-21,995.80

Finding the Fourth Proportional to 38,991.42, 53,807.88 and 21,995.80

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Solution

The fourth proportional to 38,991.42, 53,807.88 and 21,995.80 is: 30,354.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,991.42 : 53,807.88 = 21,995.80 : x
  2. Step 2: Convert to fraction form
    38,991.42/53,807.88 = 21,995.80/x
  3. Step 3: Cross multiply
    38,991.42x = 53,807.88 × 21,995.80
  4. Step 4: Simplify right side
    38,991.42x = 1,183,546,987.89
  5. Step 5: Solve for x
    x = 1,183,546,987.89/38,991.42
  6. Step 6: Final answer
    x = 30,354.04

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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.