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Finding the Fourth Proportional to 14,028, 19,359.06 and 7,740.78

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Solution

The fourth proportional to 14,028, 19,359.06 and 7,740.78 is: 10,682.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,028 : 19,359.06 = 7,740.78 : x
  2. Step 2: Convert to fraction form
    14,028/19,359.06 = 7,740.78/x
  3. Step 3: Cross multiply
    14,028x = 19,359.06 × 7,740.78
  4. Step 4: Simplify right side
    14,028x = 149,854,224.47
  5. Step 5: Solve for x
    x = 149,854,224.47/14,028
  6. Step 6: Final answer
    x = 10,682.51

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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.