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Finding the Fourth Proportional to 39,516.99, 59,256.86 and 13,214.67

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Solution

The fourth proportional to 39,516.99, 59,256.86 and 13,214.67 is: 19,815.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,516.99 : 59,256.86 = 13,214.67 : x
  2. Step 2: Convert to fraction form
    39,516.99/59,256.86 = 13,214.67/x
  3. Step 3: Cross multiply
    39,516.99x = 59,256.86 × 13,214.67
  4. Step 4: Simplify right side
    39,516.99x = 783,059,784.06
  5. Step 5: Solve for x
    x = 783,059,784.06/39,516.99
  6. Step 6: Final answer
    x = 19,815.78

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1.5x scale

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.