Home / 21,480.16-29,613.36-13,912.96

Finding the Fourth Proportional to 21,480.16, 29,613.36 and 13,912.96

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Solution

The fourth proportional to 21,480.16, 29,613.36 and 13,912.96 is: 19,180.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,480.16 : 29,613.36 = 13,912.96 : x
  2. Step 2: Convert to fraction form
    21,480.16/29,613.36 = 13,912.96/x
  3. Step 3: Cross multiply
    21,480.16x = 29,613.36 × 13,912.96
  4. Step 4: Simplify right side
    21,480.16x = 412,009,493.15
  5. Step 5: Solve for x
    x = 412,009,493.15/21,480.16
  6. Step 6: Final answer
    x = 19,180.93

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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.