Home / 12,644.56-18,870.69-11,243.34

Finding the Fourth Proportional to 12,644.56, 18,870.69 and 11,243.34

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Solution

The fourth proportional to 12,644.56, 18,870.69 and 11,243.34 is: 16,779.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,644.56 : 18,870.69 = 11,243.34 : x
  2. Step 2: Convert to fraction form
    12,644.56/18,870.69 = 11,243.34/x
  3. Step 3: Cross multiply
    12,644.56x = 18,870.69 × 11,243.34
  4. Step 4: Simplify right side
    12,644.56x = 212,169,583.70
  5. Step 5: Solve for x
    x = 212,169,583.70/12,644.56
  6. Step 6: Final answer
    x = 16,779.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.