Home / 39,795.45-54,917.74-21,889.99

Finding the Fourth Proportional to 39,795.45, 54,917.74 and 21,889.99

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Solution

The fourth proportional to 39,795.45, 54,917.74 and 21,889.99 is: 30,208.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,795.45 : 54,917.74 = 21,889.99 : x
  2. Step 2: Convert to fraction form
    39,795.45/54,917.74 = 21,889.99/x
  3. Step 3: Cross multiply
    39,795.45x = 54,917.74 × 21,889.99
  4. Step 4: Simplify right side
    39,795.45x = 1,202,148,779.42
  5. Step 5: Solve for x
    x = 1,202,148,779.42/39,795.45
  6. Step 6: Final answer
    x = 30,208.20

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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.