Home / 39,763.04-54,874.16-21,858.56

Finding the Fourth Proportional to 39,763.04, 54,874.16 and 21,858.56

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Solution

The fourth proportional to 39,763.04, 54,874.16 and 21,858.56 is: 30,165.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,763.04 : 54,874.16 = 21,858.56 : x
  2. Step 2: Convert to fraction form
    39,763.04/54,874.16 = 21,858.56/x
  3. Step 3: Cross multiply
    39,763.04x = 54,874.16 × 21,858.56
  4. Step 4: Simplify right side
    39,763.04x = 1,199,470,118.81
  5. Step 5: Solve for x
    x = 1,199,470,118.81/39,763.04
  6. Step 6: Final answer
    x = 30,165.45

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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.