Home / 12,118.89-18,188.06-6,277.17

Finding the Fourth Proportional to 12,118.89, 18,188.06 and 6,277.17

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Solution

The fourth proportional to 12,118.89, 18,188.06 and 6,277.17 is: 9,420.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,118.89 : 18,188.06 = 6,277.17 : x
  2. Step 2: Convert to fraction form
    12,118.89/18,188.06 = 6,277.17/x
  3. Step 3: Cross multiply
    12,118.89x = 18,188.06 × 6,277.17
  4. Step 4: Simplify right side
    12,118.89x = 114,169,590.06
  5. Step 5: Solve for x
    x = 114,169,590.06/12,118.89
  6. Step 6: Final answer
    x = 9,420.79

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1.5x scale

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.