Home / 18,711.61-28,081.69-6,876.60

Finding the Fourth Proportional to 18,711.61, 28,081.69 and 6,876.60

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Solution

The fourth proportional to 18,711.61, 28,081.69 and 6,876.60 is: 10,320.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711.61 : 28,081.69 = 6,876.60 : x
  2. Step 2: Convert to fraction form
    18,711.61/28,081.69 = 6,876.60/x
  3. Step 3: Cross multiply
    18,711.61x = 28,081.69 × 6,876.60
  4. Step 4: Simplify right side
    18,711.61x = 193,106,549.45
  5. Step 5: Solve for x
    x = 193,106,549.45/18,711.61
  6. Step 6: Final answer
    x = 10,320.15

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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.