Home / 12,506.18-18,758.76-4,185.56

Finding the Fourth Proportional to 12,506.18, 18,758.76 and 4,185.56

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Solution

The fourth proportional to 12,506.18, 18,758.76 and 4,185.56 is: 6,278.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,506.18 : 18,758.76 = 4,185.56 : x
  2. Step 2: Convert to fraction form
    12,506.18/18,758.76 = 4,185.56/x
  3. Step 3: Cross multiply
    12,506.18x = 18,758.76 × 4,185.56
  4. Step 4: Simplify right side
    12,506.18x = 78,515,955.64
  5. Step 5: Solve for x
    x = 78,515,955.64/12,506.18
  6. Step 6: Final answer
    x = 6,278.17

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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.