Home / 21,855.91-30,160.84-12,295.08

Finding the Fourth Proportional to 21,855.91, 30,160.84 and 12,295.08

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Solution

The fourth proportional to 21,855.91, 30,160.84 and 12,295.08 is: 16,967.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,855.91 : 30,160.84 = 12,295.08 : x
  2. Step 2: Convert to fraction form
    21,855.91/30,160.84 = 12,295.08/x
  3. Step 3: Cross multiply
    21,855.91x = 30,160.84 × 12,295.08
  4. Step 4: Simplify right side
    21,855.91x = 370,829,940.67
  5. Step 5: Solve for x
    x = 370,829,940.67/21,855.91
  6. Step 6: Final answer
    x = 16,967.03

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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.