Home / 28,982.70-39,977.55-19,903.68

Finding the Fourth Proportional to 28,982.70, 39,977.55 and 19,903.68

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Solution

The fourth proportional to 28,982.70, 39,977.55 and 19,903.68 is: 27,454.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,982.70 : 39,977.55 = 19,903.68 : x
  2. Step 2: Convert to fraction form
    28,982.70/39,977.55 = 19,903.68/x
  3. Step 3: Cross multiply
    28,982.70x = 39,977.55 × 19,903.68
  4. Step 4: Simplify right side
    28,982.70x = 795,700,362.38
  5. Step 5: Solve for x
    x = 795,700,362.38/28,982.70
  6. Step 6: Final answer
    x = 27,454.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.