Home / 28,284.63-39,034.01-15,709.38

Finding the Fourth Proportional to 28,284.63, 39,034.01 and 15,709.38

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Solution

The fourth proportional to 28,284.63, 39,034.01 and 15,709.38 is: 21,679.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,284.63 : 39,034.01 = 15,709.38 : x
  2. Step 2: Convert to fraction form
    28,284.63/39,034.01 = 15,709.38/x
  3. Step 3: Cross multiply
    28,284.63x = 39,034.01 × 15,709.38
  4. Step 4: Simplify right side
    28,284.63x = 613,200,096.01
  5. Step 5: Solve for x
    x = 613,200,096.01/28,284.63
  6. Step 6: Final answer
    x = 21,679.62

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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.