Home / 12,114.08-18,158.88-4,318.64

Finding the Fourth Proportional to 12,114.08, 18,158.88 and 4,318.64

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Solution

The fourth proportional to 12,114.08, 18,158.88 and 4,318.64 is: 6,473.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,114.08 : 18,158.88 = 4,318.64 : x
  2. Step 2: Convert to fraction form
    12,114.08/18,158.88 = 4,318.64/x
  3. Step 3: Cross multiply
    12,114.08x = 18,158.88 × 4,318.64
  4. Step 4: Simplify right side
    12,114.08x = 78,421,665.52
  5. Step 5: Solve for x
    x = 78,421,665.52/12,114.08
  6. Step 6: Final answer
    x = 6,473.60

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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.