Home / 13,855.08-20,782.62-6,464.72

Finding the Fourth Proportional to 13,855.08, 20,782.62 and 6,464.72

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Solution

The fourth proportional to 13,855.08, 20,782.62 and 6,464.72 is: 9,697.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,855.08 : 20,782.62 = 6,464.72 : x
  2. Step 2: Convert to fraction form
    13,855.08/20,782.62 = 6,464.72/x
  3. Step 3: Cross multiply
    13,855.08x = 20,782.62 × 6,464.72
  4. Step 4: Simplify right side
    13,855.08x = 134,353,715.25
  5. Step 5: Solve for x
    x = 134,353,715.25/13,855.08
  6. Step 6: Final answer
    x = 9,697.07

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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.