Home / 21,147.46-29,163.36-12,648.19

Finding the Fourth Proportional to 21,147.46, 29,163.36 and 12,648.19

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Solution

The fourth proportional to 21,147.46, 29,163.36 and 12,648.19 is: 17,442.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,147.46 : 29,163.36 = 12,648.19 : x
  2. Step 2: Convert to fraction form
    21,147.46/29,163.36 = 12,648.19/x
  3. Step 3: Cross multiply
    21,147.46x = 29,163.36 × 12,648.19
  4. Step 4: Simplify right side
    21,147.46x = 368,863,718.32
  5. Step 5: Solve for x
    x = 368,863,718.32/21,147.46
  6. Step 6: Final answer
    x = 17,442.46

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Double scale
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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.