Home / 28,561.05-42,849.45-11,928.90

Finding the Fourth Proportional to 28,561.05, 42,849.45 and 11,928.90

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Solution

The fourth proportional to 28,561.05, 42,849.45 and 11,928.90 is: 17,896.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,561.05 : 42,849.45 = 11,928.90 : x
  2. Step 2: Convert to fraction form
    28,561.05/42,849.45 = 11,928.90/x
  3. Step 3: Cross multiply
    28,561.05x = 42,849.45 × 11,928.90
  4. Step 4: Simplify right side
    28,561.05x = 511,146,804.11
  5. Step 5: Solve for x
    x = 511,146,804.11/28,561.05
  6. Step 6: Final answer
    x = 17,896.64

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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.