Home / 21,475.74-29,630.44-13,922.40

Finding the Fourth Proportional to 21,475.74, 29,630.44 and 13,922.40

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Solution

The fourth proportional to 21,475.74, 29,630.44 and 13,922.40 is: 19,208.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,475.74 : 29,630.44 = 13,922.40 : x
  2. Step 2: Convert to fraction form
    21,475.74/29,630.44 = 13,922.40/x
  3. Step 3: Cross multiply
    21,475.74x = 29,630.44 × 13,922.40
  4. Step 4: Simplify right side
    21,475.74x = 412,526,837.86
  5. Step 5: Solve for x
    x = 412,526,837.86/21,475.74
  6. Step 6: Final answer
    x = 19,208.97

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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.