Home / 11,970.99-16,519.95-6,665.76

Finding the Fourth Proportional to 11,970.99, 16,519.95 and 6,665.76

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Solution

The fourth proportional to 11,970.99, 16,519.95 and 6,665.76 is: 9,198.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,970.99 : 16,519.95 = 6,665.76 : x
  2. Step 2: Convert to fraction form
    11,970.99/16,519.95 = 6,665.76/x
  3. Step 3: Cross multiply
    11,970.99x = 16,519.95 × 6,665.76
  4. Step 4: Simplify right side
    11,970.99x = 110,118,021.91
  5. Step 5: Solve for x
    x = 110,118,021.91/11,970.99
  6. Step 6: Final answer
    x = 9,198.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.