Home / 21,859.24-30,162.90-12,427.60

Finding the Fourth Proportional to 21,859.24, 30,162.90 and 12,427.60

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Solution

The fourth proportional to 21,859.24, 30,162.90 and 12,427.60 is: 17,148.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,859.24 : 30,162.90 = 12,427.60 : x
  2. Step 2: Convert to fraction form
    21,859.24/30,162.90 = 12,427.60/x
  3. Step 3: Cross multiply
    21,859.24x = 30,162.90 × 12,427.60
  4. Step 4: Simplify right side
    21,859.24x = 374,852,456.04
  5. Step 5: Solve for x
    x = 374,852,456.04/21,859.24
  6. Step 6: Final answer
    x = 17,148.47

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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.