Home / 15,108.35-20,852.03-12,586.47

Finding the Fourth Proportional to 15,108.35, 20,852.03 and 12,586.47

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Solution

The fourth proportional to 15,108.35, 20,852.03 and 12,586.47 is: 17,371.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,108.35 : 20,852.03 = 12,586.47 : x
  2. Step 2: Convert to fraction form
    15,108.35/20,852.03 = 12,586.47/x
  3. Step 3: Cross multiply
    15,108.35x = 20,852.03 × 12,586.47
  4. Step 4: Simplify right side
    15,108.35x = 262,453,450.03
  5. Step 5: Solve for x
    x = 262,453,450.03/15,108.35
  6. Step 6: Final answer
    x = 17,371.42

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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.