Home / 39,685.37-54,766.46-21,782.04

Finding the Fourth Proportional to 39,685.37, 54,766.46 and 21,782.04

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Solution

The fourth proportional to 39,685.37, 54,766.46 and 21,782.04 is: 30,059.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,685.37 : 54,766.46 = 21,782.04 : x
  2. Step 2: Convert to fraction form
    39,685.37/54,766.46 = 21,782.04/x
  3. Step 3: Cross multiply
    39,685.37x = 54,766.46 × 21,782.04
  4. Step 4: Simplify right side
    39,685.37x = 1,192,925,113.47
  5. Step 5: Solve for x
    x = 1,192,925,113.47/39,685.37
  6. Step 6: Final answer
    x = 30,059.57

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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.