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Finding the Fourth Proportional to 14,953.69, 20,636.34 and 8,239.26

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Solution

The fourth proportional to 14,953.69, 20,636.34 and 8,239.26 is: 11,370.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,953.69 : 20,636.34 = 8,239.26 : x
  2. Step 2: Convert to fraction form
    14,953.69/20,636.34 = 8,239.26/x
  3. Step 3: Cross multiply
    14,953.69x = 20,636.34 × 8,239.26
  4. Step 4: Simplify right side
    14,953.69x = 170,028,170.71
  5. Step 5: Solve for x
    x = 170,028,170.71/14,953.69
  6. Step 6: Final answer
    x = 11,370.32

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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.