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Finding the Fourth Proportional to 28,854.96, 39,819.96 and 15,606.96

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Solution

The fourth proportional to 28,854.96, 39,819.96 and 15,606.96 is: 21,537.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,854.96 : 39,819.96 = 15,606.96 : x
  2. Step 2: Convert to fraction form
    28,854.96/39,819.96 = 15,606.96/x
  3. Step 3: Cross multiply
    28,854.96x = 39,819.96 × 15,606.96
  4. Step 4: Simplify right side
    28,854.96x = 621,468,522.92
  5. Step 5: Solve for x
    x = 621,468,522.92/28,854.96
  6. Step 6: Final answer
    x = 21,537.67

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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.