Home / 21,642.96-29,866.68-12,212.40

Finding the Fourth Proportional to 21,642.96, 29,866.68 and 12,212.40

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Solution

The fourth proportional to 21,642.96, 29,866.68 and 12,212.40 is: 16,852.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,642.96 : 29,866.68 = 12,212.40 : x
  2. Step 2: Convert to fraction form
    21,642.96/29,866.68 = 12,212.40/x
  3. Step 3: Cross multiply
    21,642.96x = 29,866.68 × 12,212.40
  4. Step 4: Simplify right side
    21,642.96x = 364,743,842.83
  5. Step 5: Solve for x
    x = 364,743,842.83/21,642.96
  6. Step 6: Final answer
    x = 16,852.77

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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.