Home / 28,515.49-42,769.58-11,872.42

Finding the Fourth Proportional to 28,515.49, 42,769.58 and 11,872.42

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Solution

The fourth proportional to 28,515.49, 42,769.58 and 11,872.42 is: 17,807.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,515.49 : 42,769.58 = 11,872.42 : x
  2. Step 2: Convert to fraction form
    28,515.49/42,769.58 = 11,872.42/x
  3. Step 3: Cross multiply
    28,515.49x = 42,769.58 × 11,872.42
  4. Step 4: Simplify right side
    28,515.49x = 507,778,416.98
  5. Step 5: Solve for x
    x = 507,778,416.98/28,515.49
  6. Step 6: Final answer
    x = 17,807.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.