Home / 39,742.28-54,845.36-21,837.74

Finding the Fourth Proportional to 39,742.28, 54,845.36 and 21,837.74

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Solution

The fourth proportional to 39,742.28, 54,845.36 and 21,837.74 is: 30,136.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,742.28 : 54,845.36 = 21,837.74 : x
  2. Step 2: Convert to fraction form
    39,742.28/54,845.36 = 21,837.74/x
  3. Step 3: Cross multiply
    39,742.28x = 54,845.36 × 21,837.74
  4. Step 4: Simplify right side
    39,742.28x = 1,197,698,328.47
  5. Step 5: Solve for x
    x = 1,197,698,328.47/39,742.28
  6. Step 6: Final answer
    x = 30,136.63

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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.