Home / 28,220.45-38,944.67-15,474.80

Finding the Fourth Proportional to 28,220.45, 38,944.67 and 15,474.80

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Solution

The fourth proportional to 28,220.45, 38,944.67 and 15,474.80 is: 21,355.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,220.45 : 38,944.67 = 15,474.80 : x
  2. Step 2: Convert to fraction form
    28,220.45/38,944.67 = 15,474.80/x
  3. Step 3: Cross multiply
    28,220.45x = 38,944.67 × 15,474.80
  4. Step 4: Simplify right side
    28,220.45x = 602,660,910.81
  5. Step 5: Solve for x
    x = 602,660,910.81/28,220.45
  6. Step 6: Final answer
    x = 21,355.47

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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.