Home / 39,074.20-53,922.02-21,168.12

Finding the Fourth Proportional to 39,074.20, 53,922.02 and 21,168.12

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Solution

The fourth proportional to 39,074.20, 53,922.02 and 21,168.12 is: 29,211.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,074.20 : 53,922.02 = 21,168.12 : x
  2. Step 2: Convert to fraction form
    39,074.20/53,922.02 = 21,168.12/x
  3. Step 3: Cross multiply
    39,074.20x = 53,922.02 × 21,168.12
  4. Step 4: Simplify right side
    39,074.20x = 1,141,427,790.00
  5. Step 5: Solve for x
    x = 1,141,427,790.00/39,074.20
  6. Step 6: Final answer
    x = 29,211.80

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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.