Home / 19,117.15-28,661.74-12,861.61

Finding the Fourth Proportional to 19,117.15, 28,661.74 and 12,861.61

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Solution

The fourth proportional to 19,117.15, 28,661.74 and 12,861.61 is: 19,283.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,117.15 : 28,661.74 = 12,861.61 : x
  2. Step 2: Convert to fraction form
    19,117.15/28,661.74 = 12,861.61/x
  3. Step 3: Cross multiply
    19,117.15x = 28,661.74 × 12,861.61
  4. Step 4: Simplify right side
    19,117.15x = 368,636,121.80
  5. Step 5: Solve for x
    x = 368,636,121.80/19,117.15
  6. Step 6: Final answer
    x = 19,283.01

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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.