Home / 28,721.92-39,639.81-16,146.67

Finding the Fourth Proportional to 28,721.92, 39,639.81 and 16,146.67

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Solution

The fourth proportional to 28,721.92, 39,639.81 and 16,146.67 is: 22,284.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,721.92 : 39,639.81 = 16,146.67 : x
  2. Step 2: Convert to fraction form
    28,721.92/39,639.81 = 16,146.67/x
  3. Step 3: Cross multiply
    28,721.92x = 39,639.81 × 16,146.67
  4. Step 4: Simplify right side
    28,721.92x = 640,050,930.93
  5. Step 5: Solve for x
    x = 640,050,930.93/28,721.92
  6. Step 6: Final answer
    x = 22,284.41

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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.