Home / 14,284.90-21,428.19-5,519.86

Finding the Fourth Proportional to 14,284.90, 21,428.19 and 5,519.86

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Solution

The fourth proportional to 14,284.90, 21,428.19 and 5,519.86 is: 8,280.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,284.90 : 21,428.19 = 5,519.86 : x
  2. Step 2: Convert to fraction form
    14,284.90/21,428.19 = 5,519.86/x
  3. Step 3: Cross multiply
    14,284.90x = 21,428.19 × 5,519.86
  4. Step 4: Simplify right side
    14,284.90x = 118,280,608.85
  5. Step 5: Solve for x
    x = 118,280,608.85/14,284.90
  6. Step 6: Final answer
    x = 8,280.11

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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.