Home / 13,953.18-19,256.46-7,986.72

Finding the Fourth Proportional to 13,953.18, 19,256.46 and 7,986.72

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Solution

The fourth proportional to 13,953.18, 19,256.46 and 7,986.72 is: 11,022.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,953.18 : 19,256.46 = 7,986.72 : x
  2. Step 2: Convert to fraction form
    13,953.18/19,256.46 = 7,986.72/x
  3. Step 3: Cross multiply
    13,953.18x = 19,256.46 × 7,986.72
  4. Step 4: Simplify right side
    13,953.18x = 153,795,954.21
  5. Step 5: Solve for x
    x = 153,795,954.21/13,953.18
  6. Step 6: Final answer
    x = 11,022.29

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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.