Home / 11,970.40-16,518.96-6,665.76

Finding the Fourth Proportional to 11,970.40, 16,518.96 and 6,665.76

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Solution

The fourth proportional to 11,970.40, 16,518.96 and 6,665.76 is: 9,198.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,970.40 : 16,518.96 = 6,665.76 : x
  2. Step 2: Convert to fraction form
    11,970.40/16,518.96 = 6,665.76/x
  3. Step 3: Cross multiply
    11,970.40x = 16,518.96 × 6,665.76
  4. Step 4: Simplify right side
    11,970.40x = 110,111,422.81
  5. Step 5: Solve for x
    x = 110,111,422.81/11,970.40
  6. Step 6: Final answer
    x = 9,198.64

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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.