Home / 39,742.22-54,844.30-21,838.39

Finding the Fourth Proportional to 39,742.22, 54,844.30 and 21,838.39

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Solution

The fourth proportional to 39,742.22, 54,844.30 and 21,838.39 is: 30,136.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,742.22 : 54,844.30 = 21,838.39 : x
  2. Step 2: Convert to fraction form
    39,742.22/54,844.30 = 21,838.39/x
  3. Step 3: Cross multiply
    39,742.22x = 54,844.30 × 21,838.39
  4. Step 4: Simplify right side
    39,742.22x = 1,197,710,829.26
  5. Step 5: Solve for x
    x = 1,197,710,829.26/39,742.22
  6. Step 6: Final answer
    x = 30,136.99

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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.