Home / 39,774.52-54,889.75-21,870.53

Finding the Fourth Proportional to 39,774.52, 54,889.75 and 21,870.53

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Solution

The fourth proportional to 39,774.52, 54,889.75 and 21,870.53 is: 30,181.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,774.52 : 54,889.75 = 21,870.53 : x
  2. Step 2: Convert to fraction form
    39,774.52/54,889.75 = 21,870.53/x
  3. Step 3: Cross multiply
    39,774.52x = 54,889.75 × 21,870.53
  4. Step 4: Simplify right side
    39,774.52x = 1,200,467,924.07
  5. Step 5: Solve for x
    x = 1,200,467,924.07/39,774.52
  6. Step 6: Final answer
    x = 30,181.83

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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.