Home / 11,970.92-16,520.15-6,665.63

Finding the Fourth Proportional to 11,970.92, 16,520.15 and 6,665.63

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Solution

The fourth proportional to 11,970.92, 16,520.15 and 6,665.63 is: 9,198.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,970.92 : 16,520.15 = 6,665.63 : x
  2. Step 2: Convert to fraction form
    11,970.92/16,520.15 = 6,665.63/x
  3. Step 3: Cross multiply
    11,970.92x = 16,520.15 × 6,665.63
  4. Step 4: Simplify right side
    11,970.92x = 110,117,141.51
  5. Step 5: Solve for x
    x = 110,117,141.51/11,970.92
  6. Step 6: Final answer
    x = 9,198.72

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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.