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Finding the Fourth Proportional to 13,986.56, 19,301.86 and 7,613.56

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Solution

The fourth proportional to 13,986.56, 19,301.86 and 7,613.56 is: 10,506.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.56 : 19,301.86 = 7,613.56 : x
  2. Step 2: Convert to fraction form
    13,986.56/19,301.86 = 7,613.56/x
  3. Step 3: Cross multiply
    13,986.56x = 19,301.86 × 7,613.56
  4. Step 4: Simplify right side
    13,986.56x = 146,955,782.90
  5. Step 5: Solve for x
    x = 146,955,782.90/13,986.56
  6. Step 6: Final answer
    x = 10,506.93

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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.