Home / 19,146.88-28,718.79-12,106.36

Finding the Fourth Proportional to 19,146.88, 28,718.79 and 12,106.36

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Solution

The fourth proportional to 19,146.88, 28,718.79 and 12,106.36 is: 18,158.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,146.88 : 28,718.79 = 12,106.36 : x
  2. Step 2: Convert to fraction form
    19,146.88/28,718.79 = 12,106.36/x
  3. Step 3: Cross multiply
    19,146.88x = 28,718.79 × 12,106.36
  4. Step 4: Simplify right side
    19,146.88x = 347,680,010.50
  5. Step 5: Solve for x
    x = 347,680,010.50/19,146.88
  6. Step 6: Final answer
    x = 18,158.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.