Home / 39,336.74-54,283.24-21,431.36

Finding the Fourth Proportional to 39,336.74, 54,283.24 and 21,431.36

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Solution

The fourth proportional to 39,336.74, 54,283.24 and 21,431.36 is: 29,574.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,336.74 : 54,283.24 = 21,431.36 : x
  2. Step 2: Convert to fraction form
    39,336.74/54,283.24 = 21,431.36/x
  3. Step 3: Cross multiply
    39,336.74x = 54,283.24 × 21,431.36
  4. Step 4: Simplify right side
    39,336.74x = 1,163,363,658.41
  5. Step 5: Solve for x
    x = 1,163,363,658.41/39,336.74
  6. Step 6: Final answer
    x = 29,574.48

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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.