Home / 20,967.06-28,934.07-12,019.85

Finding the Fourth Proportional to 20,967.06, 28,934.07 and 12,019.85

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Solution

The fourth proportional to 20,967.06, 28,934.07 and 12,019.85 is: 16,587.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,967.06 : 28,934.07 = 12,019.85 : x
  2. Step 2: Convert to fraction form
    20,967.06/28,934.07 = 12,019.85/x
  3. Step 3: Cross multiply
    20,967.06x = 28,934.07 × 12,019.85
  4. Step 4: Simplify right side
    20,967.06x = 347,783,036.62
  5. Step 5: Solve for x
    x = 347,783,036.62/20,967.06
  6. Step 6: Final answer
    x = 16,587.12

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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.