Home / 21,284.22-29,323.28-16,806.30

Finding the Fourth Proportional to 21,284.22, 29,323.28 and 16,806.30

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Solution

The fourth proportional to 21,284.22, 29,323.28 and 16,806.30 is: 23,154.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,284.22 : 29,323.28 = 16,806.30 : x
  2. Step 2: Convert to fraction form
    21,284.22/29,323.28 = 16,806.30/x
  3. Step 3: Cross multiply
    21,284.22x = 29,323.28 × 16,806.30
  4. Step 4: Simplify right side
    21,284.22x = 492,815,840.66
  5. Step 5: Solve for x
    x = 492,815,840.66/21,284.22
  6. Step 6: Final answer
    x = 23,154.05

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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.