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Finding the Fourth Proportional to 12,756.93, 19,140.32 and 4,437.81

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Solution

The fourth proportional to 12,756.93, 19,140.32 and 4,437.81 is: 6,658.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,756.93 : 19,140.32 = 4,437.81 : x
  2. Step 2: Convert to fraction form
    12,756.93/19,140.32 = 4,437.81/x
  3. Step 3: Cross multiply
    12,756.93x = 19,140.32 × 4,437.81
  4. Step 4: Simplify right side
    12,756.93x = 84,941,081.31
  5. Step 5: Solve for x
    x = 84,941,081.31/12,756.93
  6. Step 6: Final answer
    x = 6,658.43

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.