Home / 12,119.99-18,172.55-4,715.83

Finding the Fourth Proportional to 12,119.99, 18,172.55 and 4,715.83

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Solution

The fourth proportional to 12,119.99, 18,172.55 and 4,715.83 is: 7,070.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,119.99 : 18,172.55 = 4,715.83 : x
  2. Step 2: Convert to fraction form
    12,119.99/18,172.55 = 4,715.83/x
  3. Step 3: Cross multiply
    12,119.99x = 18,172.55 × 4,715.83
  4. Step 4: Simplify right side
    12,119.99x = 85,698,656.47
  5. Step 5: Solve for x
    x = 85,698,656.47/12,119.99
  6. Step 6: Final answer
    x = 7,070.85

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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.