Home / 15,404.36-21,211.41-12,705.54

Finding the Fourth Proportional to 15,404.36, 21,211.41 and 12,705.54

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Solution

The fourth proportional to 15,404.36, 21,211.41 and 12,705.54 is: 17,495.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,404.36 : 21,211.41 = 12,705.54 : x
  2. Step 2: Convert to fraction form
    15,404.36/21,211.41 = 12,705.54/x
  3. Step 3: Cross multiply
    15,404.36x = 21,211.41 × 12,705.54
  4. Step 4: Simplify right side
    15,404.36x = 269,502,418.21
  5. Step 5: Solve for x
    x = 269,502,418.21/15,404.36
  6. Step 6: Final answer
    x = 17,495.21

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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.