Home / 21,630.21-29,848.01-12,676.47

Finding the Fourth Proportional to 21,630.21, 29,848.01 and 12,676.47

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Solution

The fourth proportional to 21,630.21, 29,848.01 and 12,676.47 is: 17,492.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,630.21 : 29,848.01 = 12,676.47 : x
  2. Step 2: Convert to fraction form
    21,630.21/29,848.01 = 12,676.47/x
  3. Step 3: Cross multiply
    21,630.21x = 29,848.01 × 12,676.47
  4. Step 4: Simplify right side
    21,630.21x = 378,367,339.94
  5. Step 5: Solve for x
    x = 378,367,339.94/21,630.21
  6. Step 6: Final answer
    x = 17,492.54

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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.