Home / 21,473.98-29,628.03-13,920.63

Finding the Fourth Proportional to 21,473.98, 29,628.03 and 13,920.63

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Solution

The fourth proportional to 21,473.98, 29,628.03 and 13,920.63 is: 19,206.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,473.98 : 29,628.03 = 13,920.63 : x
  2. Step 2: Convert to fraction form
    21,473.98/29,628.03 = 13,920.63/x
  3. Step 3: Cross multiply
    21,473.98x = 29,628.03 × 13,920.63
  4. Step 4: Simplify right side
    21,473.98x = 412,440,843.26
  5. Step 5: Solve for x
    x = 412,440,843.26/21,473.98
  6. Step 6: Final answer
    x = 19,206.54

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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.