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Finding the Fourth Proportional to 14,059.91, 19,402.47 and 7,686.70

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Solution

The fourth proportional to 14,059.91, 19,402.47 and 7,686.70 is: 10,607.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,059.91 : 19,402.47 = 7,686.70 : x
  2. Step 2: Convert to fraction form
    14,059.91/19,402.47 = 7,686.70/x
  3. Step 3: Cross multiply
    14,059.91x = 19,402.47 × 7,686.70
  4. Step 4: Simplify right side
    14,059.91x = 149,140,917.64
  5. Step 5: Solve for x
    x = 149,140,917.64/14,059.91
  6. Step 6: Final answer
    x = 10,607.53

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.