Home / 39,774.27-54,888.70-21,870.43

Finding the Fourth Proportional to 39,774.27, 54,888.70 and 21,870.43

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Solution

The fourth proportional to 39,774.27, 54,888.70 and 21,870.43 is: 30,181.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,774.27 : 54,888.70 = 21,870.43 : x
  2. Step 2: Convert to fraction form
    39,774.27/54,888.70 = 21,870.43/x
  3. Step 3: Cross multiply
    39,774.27x = 54,888.70 × 21,870.43
  4. Step 4: Simplify right side
    39,774.27x = 1,200,439,471.14
  5. Step 5: Solve for x
    x = 1,200,439,471.14/39,774.27
  6. Step 6: Final answer
    x = 30,181.31

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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.