Home / 28,782-39,719.28-16,206.96

Finding the Fourth Proportional to 28,782, 39,719.28 and 16,206.96

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Solution

The fourth proportional to 28,782, 39,719.28 and 16,206.96 is: 22,365.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,782 : 39,719.28 = 16,206.96 : x
  2. Step 2: Convert to fraction form
    28,782/39,719.28 = 16,206.96/x
  3. Step 3: Cross multiply
    28,782x = 39,719.28 × 16,206.96
  4. Step 4: Simplify right side
    28,782x = 643,728,782.19
  5. Step 5: Solve for x
    x = 643,728,782.19/28,782
  6. Step 6: Final answer
    x = 22,365.67

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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.