Home / 39,742.02-54,845.19-21,837.57

Finding the Fourth Proportional to 39,742.02, 54,845.19 and 21,837.57

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Solution

The fourth proportional to 39,742.02, 54,845.19 and 21,837.57 is: 30,136.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,742.02 : 54,845.19 = 21,837.57 : x
  2. Step 2: Convert to fraction form
    39,742.02/54,845.19 = 21,837.57/x
  3. Step 3: Cross multiply
    39,742.02x = 54,845.19 × 21,837.57
  4. Step 4: Simplify right side
    39,742.02x = 1,197,685,675.79
  5. Step 5: Solve for x
    x = 1,197,685,675.79/39,742.02
  6. Step 6: Final answer
    x = 30,136.51

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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.