Home / 54,005.04-81,004.80-18,942

Finding the Fourth Proportional to 54,005.04, 81,004.80 and 18,942

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Solution

The fourth proportional to 54,005.04, 81,004.80 and 18,942 is: 28,412.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,005.04 : 81,004.80 = 18,942 : x
  2. Step 2: Convert to fraction form
    54,005.04/81,004.80 = 18,942/x
  3. Step 3: Cross multiply
    54,005.04x = 81,004.80 × 18,942
  4. Step 4: Simplify right side
    54,005.04x = 1,534,392,921.60
  5. Step 5: Solve for x
    x = 1,534,392,921.60/54,005.04
  6. Step 6: Final answer
    x = 28,412.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.