Home / 21,260.96-29,339.52-12,308.61

Finding the Fourth Proportional to 21,260.96, 29,339.52 and 12,308.61

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Solution

The fourth proportional to 21,260.96, 29,339.52 and 12,308.61 is: 16,985.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,260.96 : 29,339.52 = 12,308.61 : x
  2. Step 2: Convert to fraction form
    21,260.96/29,339.52 = 12,308.61/x
  3. Step 3: Cross multiply
    21,260.96x = 29,339.52 × 12,308.61
  4. Step 4: Simplify right side
    21,260.96x = 361,128,794.47
  5. Step 5: Solve for x
    x = 361,128,794.47/21,260.96
  6. Step 6: Final answer
    x = 16,985.54

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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.