Home / 21,087.19-31,630.79-5,504.68

Finding the Fourth Proportional to 21,087.19, 31,630.79 and 5,504.68

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Solution

The fourth proportional to 21,087.19, 31,630.79 and 5,504.68 is: 8,257.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,087.19 : 31,630.79 = 5,504.68 : x
  2. Step 2: Convert to fraction form
    21,087.19/31,630.79 = 5,504.68/x
  3. Step 3: Cross multiply
    21,087.19x = 31,630.79 × 5,504.68
  4. Step 4: Simplify right side
    21,087.19x = 174,117,377.10
  5. Step 5: Solve for x
    x = 174,117,377.10/21,087.19
  6. Step 6: Final answer
    x = 8,257.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.