Home / 21,200.39-29,255.21-12,246.44

Finding the Fourth Proportional to 21,200.39, 29,255.21 and 12,246.44

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Solution

The fourth proportional to 21,200.39, 29,255.21 and 12,246.44 is: 16,899.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,200.39 : 29,255.21 = 12,246.44 : x
  2. Step 2: Convert to fraction form
    21,200.39/29,255.21 = 12,246.44/x
  3. Step 3: Cross multiply
    21,200.39x = 29,255.21 × 12,246.44
  4. Step 4: Simplify right side
    21,200.39x = 358,271,966.44
  5. Step 5: Solve for x
    x = 358,271,966.44/21,200.39
  6. Step 6: Final answer
    x = 16,899.31

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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.