Home / 28,515.74-42,769.96-11,872.67

Finding the Fourth Proportional to 28,515.74, 42,769.96 and 11,872.67

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Solution

The fourth proportional to 28,515.74, 42,769.96 and 11,872.67 is: 17,807.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,515.74 : 42,769.96 = 11,872.67 : x
  2. Step 2: Convert to fraction form
    28,515.74/42,769.96 = 11,872.67/x
  3. Step 3: Cross multiply
    28,515.74x = 42,769.96 × 11,872.67
  4. Step 4: Simplify right side
    28,515.74x = 507,793,377.46
  5. Step 5: Solve for x
    x = 507,793,377.46/28,515.74
  6. Step 6: Final answer
    x = 17,807.48

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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.