Home / 28,340.07-42,512.49-8,618.81

Finding the Fourth Proportional to 28,340.07, 42,512.49 and 8,618.81

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Solution

The fourth proportional to 28,340.07, 42,512.49 and 8,618.81 is: 12,928.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,340.07 : 42,512.49 = 8,618.81 : x
  2. Step 2: Convert to fraction form
    28,340.07/42,512.49 = 8,618.81/x
  3. Step 3: Cross multiply
    28,340.07x = 42,512.49 × 8,618.81
  4. Step 4: Simplify right side
    28,340.07x = 366,407,073.94
  5. Step 5: Solve for x
    x = 366,407,073.94/28,340.07
  6. Step 6: Final answer
    x = 12,928.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.