Home / 15,288.56-21,090.44-9,986.48

Finding the Fourth Proportional to 15,288.56, 21,090.44 and 9,986.48

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Solution

The fourth proportional to 15,288.56, 21,090.44 and 9,986.48 is: 13,776.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,288.56 : 21,090.44 = 9,986.48 : x
  2. Step 2: Convert to fraction form
    15,288.56/21,090.44 = 9,986.48/x
  3. Step 3: Cross multiply
    15,288.56x = 21,090.44 × 9,986.48
  4. Step 4: Simplify right side
    15,288.56x = 210,619,257.25
  5. Step 5: Solve for x
    x = 210,619,257.25/15,288.56
  6. Step 6: Final answer
    x = 13,776.27

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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.