Home / 28,678.05-39,568.79-16,734.57

Finding the Fourth Proportional to 28,678.05, 39,568.79 and 16,734.57

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Solution

The fourth proportional to 28,678.05, 39,568.79 and 16,734.57 is: 23,089.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,678.05 : 39,568.79 = 16,734.57 : x
  2. Step 2: Convert to fraction form
    28,678.05/39,568.79 = 16,734.57/x
  3. Step 3: Cross multiply
    28,678.05x = 39,568.79 × 16,734.57
  4. Step 4: Simplify right side
    28,678.05x = 662,166,602.40
  5. Step 5: Solve for x
    x = 662,166,602.40/28,678.05
  6. Step 6: Final answer
    x = 23,089.67

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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.