Home / 19,178.09-28,771.05-8,084.78

Finding the Fourth Proportional to 19,178.09, 28,771.05 and 8,084.78

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Solution

The fourth proportional to 19,178.09, 28,771.05 and 8,084.78 is: 12,128.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,178.09 : 28,771.05 = 8,084.78 : x
  2. Step 2: Convert to fraction form
    19,178.09/28,771.05 = 8,084.78/x
  3. Step 3: Cross multiply
    19,178.09x = 28,771.05 × 8,084.78
  4. Step 4: Simplify right side
    19,178.09x = 232,607,465.76
  5. Step 5: Solve for x
    x = 232,607,465.76/19,178.09
  6. Step 6: Final answer
    x = 12,128.82

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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.