Home / 11,065.75-15,261.74-10,143.26

Finding the Fourth Proportional to 11,065.75, 15,261.74 and 10,143.26

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Solution

The fourth proportional to 11,065.75, 15,261.74 and 10,143.26 is: 13,989.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,065.75 : 15,261.74 = 10,143.26 : x
  2. Step 2: Convert to fraction form
    11,065.75/15,261.74 = 10,143.26/x
  3. Step 3: Cross multiply
    11,065.75x = 15,261.74 × 10,143.26
  4. Step 4: Simplify right side
    11,065.75x = 154,803,796.87
  5. Step 5: Solve for x
    x = 154,803,796.87/11,065.75
  6. Step 6: Final answer
    x = 13,989.46

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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.