Home / 28,520.49-42,786.78-10,750.77

Finding the Fourth Proportional to 28,520.49, 42,786.78 and 10,750.77

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Solution

The fourth proportional to 28,520.49, 42,786.78 and 10,750.77 is: 16,128.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,520.49 : 42,786.78 = 10,750.77 : x
  2. Step 2: Convert to fraction form
    28,520.49/42,786.78 = 10,750.77/x
  3. Step 3: Cross multiply
    28,520.49x = 42,786.78 × 10,750.77
  4. Step 4: Simplify right side
    28,520.49x = 459,990,830.82
  5. Step 5: Solve for x
    x = 459,990,830.82/28,520.49
  6. Step 6: Final answer
    x = 16,128.43

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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.