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Finding the Fourth Proportional to 14,828.43, 20,447.73 and 9,518.88

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Solution

The fourth proportional to 14,828.43, 20,447.73 and 9,518.88 is: 13,126.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,828.43 : 20,447.73 = 9,518.88 : x
  2. Step 2: Convert to fraction form
    14,828.43/20,447.73 = 9,518.88/x
  3. Step 3: Cross multiply
    14,828.43x = 20,447.73 × 9,518.88
  4. Step 4: Simplify right side
    14,828.43x = 194,639,488.14
  5. Step 5: Solve for x
    x = 194,639,488.14/14,828.43
  6. Step 6: Final answer
    x = 13,126.10

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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.