Home / 12,816.36-17,679.84-10,429.02

Finding the Fourth Proportional to 12,816.36, 17,679.84 and 10,429.02

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Solution

The fourth proportional to 12,816.36, 17,679.84 and 10,429.02 is: 14,386.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,816.36 : 17,679.84 = 10,429.02 : x
  2. Step 2: Convert to fraction form
    12,816.36/17,679.84 = 10,429.02/x
  3. Step 3: Cross multiply
    12,816.36x = 17,679.84 × 10,429.02
  4. Step 4: Simplify right side
    12,816.36x = 184,383,404.96
  5. Step 5: Solve for x
    x = 184,383,404.96/12,816.36
  6. Step 6: Final answer
    x = 14,386.57

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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.