Home / 28,678.81-43,017.31-7,902.13

Finding the Fourth Proportional to 28,678.81, 43,017.31 and 7,902.13

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Solution

The fourth proportional to 28,678.81, 43,017.31 and 7,902.13 is: 11,852.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,678.81 : 43,017.31 = 7,902.13 : x
  2. Step 2: Convert to fraction form
    28,678.81/43,017.31 = 7,902.13/x
  3. Step 3: Cross multiply
    28,678.81x = 43,017.31 × 7,902.13
  4. Step 4: Simplify right side
    28,678.81x = 339,928,375.87
  5. Step 5: Solve for x
    x = 339,928,375.87/28,678.81
  6. Step 6: Final answer
    x = 11,852.95

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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.