Home / 28,222.47-38,947.74-15,956.88

Finding the Fourth Proportional to 28,222.47, 38,947.74 and 15,956.88

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Solution

The fourth proportional to 28,222.47, 38,947.74 and 15,956.88 is: 22,020.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,222.47 : 38,947.74 = 15,956.88 : x
  2. Step 2: Convert to fraction form
    28,222.47/38,947.74 = 15,956.88/x
  3. Step 3: Cross multiply
    28,222.47x = 38,947.74 × 15,956.88
  4. Step 4: Simplify right side
    28,222.47x = 621,484,413.45
  5. Step 5: Solve for x
    x = 621,484,413.45/28,222.47
  6. Step 6: Final answer
    x = 22,020.91

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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.