Home / 39,742.41-54,844.56-21,838.58

Finding the Fourth Proportional to 39,742.41, 54,844.56 and 21,838.58

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Solution

The fourth proportional to 39,742.41, 54,844.56 and 21,838.58 is: 30,137.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,742.41 : 54,844.56 = 21,838.58 : x
  2. Step 2: Convert to fraction form
    39,742.41/54,844.56 = 21,838.58/x
  3. Step 3: Cross multiply
    39,742.41x = 54,844.56 × 21,838.58
  4. Step 4: Simplify right side
    39,742.41x = 1,197,726,927.71
  5. Step 5: Solve for x
    x = 1,197,726,927.71/39,742.41
  6. Step 6: Final answer
    x = 30,137.25

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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.