Home / 20,959.16-28,922.67-12,005.82

Finding the Fourth Proportional to 20,959.16, 28,922.67 and 12,005.82

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Solution

The fourth proportional to 20,959.16, 28,922.67 and 12,005.82 is: 16,567.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,959.16 : 28,922.67 = 12,005.82 : x
  2. Step 2: Convert to fraction form
    20,959.16/28,922.67 = 12,005.82/x
  3. Step 3: Cross multiply
    20,959.16x = 28,922.67 × 12,005.82
  4. Step 4: Simplify right side
    20,959.16x = 347,240,369.94
  5. Step 5: Solve for x
    x = 347,240,369.94/20,959.16
  6. Step 6: Final answer
    x = 16,567.48

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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.