Home / 31,696.84-43,735.08-21,491.48

Finding the Fourth Proportional to 31,696.84, 43,735.08 and 21,491.48

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Solution

The fourth proportional to 31,696.84, 43,735.08 and 21,491.48 is: 29,653.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,696.84 : 43,735.08 = 21,491.48 : x
  2. Step 2: Convert to fraction form
    31,696.84/43,735.08 = 21,491.48/x
  3. Step 3: Cross multiply
    31,696.84x = 43,735.08 × 21,491.48
  4. Step 4: Simplify right side
    31,696.84x = 939,931,597.12
  5. Step 5: Solve for x
    x = 939,931,597.12/31,696.84
  6. Step 6: Final answer
    x = 29,653.80

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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.