Home / 28,515.42-39,310.11-19,548.72

Finding the Fourth Proportional to 28,515.42, 39,310.11 and 19,548.72

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Solution

The fourth proportional to 28,515.42, 39,310.11 and 19,548.72 is: 26,949.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,515.42 : 39,310.11 = 19,548.72 : x
  2. Step 2: Convert to fraction form
    28,515.42/39,310.11 = 19,548.72/x
  3. Step 3: Cross multiply
    28,515.42x = 39,310.11 × 19,548.72
  4. Step 4: Simplify right side
    28,515.42x = 768,462,333.56
  5. Step 5: Solve for x
    x = 768,462,333.56/28,515.42
  6. Step 6: Final answer
    x = 26,949.01

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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.