Home / 10,861.16-16,280.80-4,284.80

Finding the Fourth Proportional to 10,861.16, 16,280.80 and 4,284.80

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Solution

The fourth proportional to 10,861.16, 16,280.80 and 4,284.80 is: 6,422.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,861.16 : 16,280.80 = 4,284.80 : x
  2. Step 2: Convert to fraction form
    10,861.16/16,280.80 = 4,284.80/x
  3. Step 3: Cross multiply
    10,861.16x = 16,280.80 × 4,284.80
  4. Step 4: Simplify right side
    10,861.16x = 69,759,971.84
  5. Step 5: Solve for x
    x = 69,759,971.84/10,861.16
  6. Step 6: Final answer
    x = 6,422.88

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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.