Home / 28,409.09-42,619.78-10,878.92

Finding the Fourth Proportional to 28,409.09, 42,619.78 and 10,878.92

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Solution

The fourth proportional to 28,409.09, 42,619.78 and 10,878.92 is: 16,320.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,409.09 : 42,619.78 = 10,878.92 : x
  2. Step 2: Convert to fraction form
    28,409.09/42,619.78 = 10,878.92/x
  3. Step 3: Cross multiply
    28,409.09x = 42,619.78 × 10,878.92
  4. Step 4: Simplify right side
    28,409.09x = 463,656,977.54
  5. Step 5: Solve for x
    x = 463,656,977.54/28,409.09
  6. Step 6: Final answer
    x = 16,320.73

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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.