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Finding the Fourth Proportional to 14,662.88, 20,215.74 and 9,348.47

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Solution

The fourth proportional to 14,662.88, 20,215.74 and 9,348.47 is: 12,888.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,662.88 : 20,215.74 = 9,348.47 : x
  2. Step 2: Convert to fraction form
    14,662.88/20,215.74 = 9,348.47/x
  3. Step 3: Cross multiply
    14,662.88x = 20,215.74 × 9,348.47
  4. Step 4: Simplify right side
    14,662.88x = 188,986,238.92
  5. Step 5: Solve for x
    x = 188,986,238.92/14,662.88
  6. Step 6: Final answer
    x = 12,888.75

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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.