Home / 20,466.40-28,244.64-11,513.44

Finding the Fourth Proportional to 20,466.40, 28,244.64 and 11,513.44

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Solution

The fourth proportional to 20,466.40, 28,244.64 and 11,513.44 is: 15,889.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,466.40 : 28,244.64 = 11,513.44 : x
  2. Step 2: Convert to fraction form
    20,466.40/28,244.64 = 11,513.44/x
  3. Step 3: Cross multiply
    20,466.40x = 28,244.64 × 11,513.44
  4. Step 4: Simplify right side
    20,466.40x = 325,192,967.96
  5. Step 5: Solve for x
    x = 325,192,967.96/20,466.40
  6. Step 6: Final answer
    x = 15,889.11

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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.