Home / 12,643.50-18,966.36-4,323.96

Finding the Fourth Proportional to 12,643.50, 18,966.36 and 4,323.96

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Solution

The fourth proportional to 12,643.50, 18,966.36 and 4,323.96 is: 6,486.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,643.50 : 18,966.36 = 4,323.96 : x
  2. Step 2: Convert to fraction form
    12,643.50/18,966.36 = 4,323.96/x
  3. Step 3: Cross multiply
    12,643.50x = 18,966.36 × 4,323.96
  4. Step 4: Simplify right side
    12,643.50x = 82,009,781.99
  5. Step 5: Solve for x
    x = 82,009,781.99/12,643.50
  6. Step 6: Final answer
    x = 6,486.32

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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.