Home / 11,918.40-16,446.48-6,880.32

Finding the Fourth Proportional to 11,918.40, 16,446.48 and 6,880.32

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Solution

The fourth proportional to 11,918.40, 16,446.48 and 6,880.32 is: 9,494.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,918.40 : 16,446.48 = 6,880.32 : x
  2. Step 2: Convert to fraction form
    11,918.40/16,446.48 = 6,880.32/x
  3. Step 3: Cross multiply
    11,918.40x = 16,446.48 × 6,880.32
  4. Step 4: Simplify right side
    11,918.40x = 113,157,045.27
  5. Step 5: Solve for x
    x = 113,157,045.27/11,918.40
  6. Step 6: Final answer
    x = 9,494.32

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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.