Home / 15,519.06-21,409.66-12,148.36

Finding the Fourth Proportional to 15,519.06, 21,409.66 and 12,148.36

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Solution

The fourth proportional to 15,519.06, 21,409.66 and 12,148.36 is: 16,759.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,519.06 : 21,409.66 = 12,148.36 : x
  2. Step 2: Convert to fraction form
    15,519.06/21,409.66 = 12,148.36/x
  3. Step 3: Cross multiply
    15,519.06x = 21,409.66 × 12,148.36
  4. Step 4: Simplify right side
    15,519.06x = 260,092,257.16
  5. Step 5: Solve for x
    x = 260,092,257.16/15,519.06
  6. Step 6: Final answer
    x = 16,759.54

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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.