Home / 13,913.78-19,201.01-7,540.35

Finding the Fourth Proportional to 13,913.78, 19,201.01 and 7,540.35

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Solution

The fourth proportional to 13,913.78, 19,201.01 and 7,540.35 is: 10,405.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,913.78 : 19,201.01 = 7,540.35 : x
  2. Step 2: Convert to fraction form
    13,913.78/19,201.01 = 7,540.35/x
  3. Step 3: Cross multiply
    13,913.78x = 19,201.01 × 7,540.35
  4. Step 4: Simplify right side
    13,913.78x = 144,782,298.05
  5. Step 5: Solve for x
    x = 144,782,298.05/13,913.78
  6. Step 6: Final answer
    x = 10,405.68

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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.