Home / 28,936.70-39,931.23-18,187.14

Finding the Fourth Proportional to 28,936.70, 39,931.23 and 18,187.14

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Solution

The fourth proportional to 28,936.70, 39,931.23 and 18,187.14 is: 25,097.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,936.70 : 39,931.23 = 18,187.14 : x
  2. Step 2: Convert to fraction form
    28,936.70/39,931.23 = 18,187.14/x
  3. Step 3: Cross multiply
    28,936.70x = 39,931.23 × 18,187.14
  4. Step 4: Simplify right side
    28,936.70x = 726,234,870.38
  5. Step 5: Solve for x
    x = 726,234,870.38/28,936.70
  6. Step 6: Final answer
    x = 25,097.36

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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.