Home / 39,775.44-54,888.70-21,870.32

Finding the Fourth Proportional to 39,775.44, 54,888.70 and 21,870.32

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Solution

The fourth proportional to 39,775.44, 54,888.70 and 21,870.32 is: 30,180.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,775.44 : 54,888.70 = 21,870.32 : x
  2. Step 2: Convert to fraction form
    39,775.44/54,888.70 = 21,870.32/x
  3. Step 3: Cross multiply
    39,775.44x = 54,888.70 × 21,870.32
  4. Step 4: Simplify right side
    39,775.44x = 1,200,433,433.38
  5. Step 5: Solve for x
    x = 1,200,433,433.38/39,775.44
  6. Step 6: Final answer
    x = 30,180.27

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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.