Home / 21,284.21-31,928.13-8,801.84

Finding the Fourth Proportional to 21,284.21, 31,928.13 and 8,801.84

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Solution

The fourth proportional to 21,284.21, 31,928.13 and 8,801.84 is: 13,203.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,284.21 : 31,928.13 = 8,801.84 : x
  2. Step 2: Convert to fraction form
    21,284.21/31,928.13 = 8,801.84/x
  3. Step 3: Cross multiply
    21,284.21x = 31,928.13 × 8,801.84
  4. Step 4: Simplify right side
    21,284.21x = 281,026,132.12
  5. Step 5: Solve for x
    x = 281,026,132.12/21,284.21
  6. Step 6: Final answer
    x = 13,203.51

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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.