Home / 28,343.63-39,114.20-15,768.38

Finding the Fourth Proportional to 28,343.63, 39,114.20 and 15,768.38

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Solution

The fourth proportional to 28,343.63, 39,114.20 and 15,768.38 is: 21,760.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,343.63 : 39,114.20 = 15,768.38 : x
  2. Step 2: Convert to fraction form
    28,343.63/39,114.20 = 15,768.38/x
  3. Step 3: Cross multiply
    28,343.63x = 39,114.20 × 15,768.38
  4. Step 4: Simplify right side
    28,343.63x = 616,767,412.85
  5. Step 5: Solve for x
    x = 616,767,412.85/28,343.63
  6. Step 6: Final answer
    x = 21,760.36

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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.