Home / 11,869.12-16,378.96-7,152.48

Finding the Fourth Proportional to 11,869.12, 16,378.96 and 7,152.48

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Solution

The fourth proportional to 11,869.12, 16,378.96 and 7,152.48 is: 9,870.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,869.12 : 16,378.96 = 7,152.48 : x
  2. Step 2: Convert to fraction form
    11,869.12/16,378.96 = 7,152.48/x
  3. Step 3: Cross multiply
    11,869.12x = 16,378.96 × 7,152.48
  4. Step 4: Simplify right side
    11,869.12x = 117,150,183.82
  5. Step 5: Solve for x
    x = 117,150,183.82/11,869.12
  6. Step 6: Final answer
    x = 9,870.17

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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.