Home / 11,138.61-16,701.43-4,213.65

Finding the Fourth Proportional to 11,138.61, 16,701.43 and 4,213.65

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Solution

The fourth proportional to 11,138.61, 16,701.43 and 4,213.65 is: 6,318.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.61 : 16,701.43 = 4,213.65 : x
  2. Step 2: Convert to fraction form
    11,138.61/16,701.43 = 4,213.65/x
  3. Step 3: Cross multiply
    11,138.61x = 16,701.43 × 4,213.65
  4. Step 4: Simplify right side
    11,138.61x = 70,373,980.52
  5. Step 5: Solve for x
    x = 70,373,980.52/11,138.61
  6. Step 6: Final answer
    x = 6,318.02

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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.