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Finding the Fourth Proportional to 14,428.53, 19,910.43 and 8,055.72

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Solution

The fourth proportional to 14,428.53, 19,910.43 and 8,055.72 is: 11,116.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,428.53 : 19,910.43 = 8,055.72 : x
  2. Step 2: Convert to fraction form
    14,428.53/19,910.43 = 8,055.72/x
  3. Step 3: Cross multiply
    14,428.53x = 19,910.43 × 8,055.72
  4. Step 4: Simplify right side
    14,428.53x = 160,392,849.16
  5. Step 5: Solve for x
    x = 160,392,849.16/14,428.53
  6. Step 6: Final answer
    x = 11,116.37

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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.