Home / 12,756.31-19,138.52-4,435.99

Finding the Fourth Proportional to 12,756.31, 19,138.52 and 4,435.99

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Solution

The fourth proportional to 12,756.31, 19,138.52 and 4,435.99 is: 6,655.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,756.31 : 19,138.52 = 4,435.99 : x
  2. Step 2: Convert to fraction form
    12,756.31/19,138.52 = 4,435.99/x
  3. Step 3: Cross multiply
    12,756.31x = 19,138.52 × 4,435.99
  4. Step 4: Simplify right side
    12,756.31x = 84,898,261.15
  5. Step 5: Solve for x
    x = 84,898,261.15/12,756.31
  6. Step 6: Final answer
    x = 6,655.39

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Why These Related Problems?

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