Home / 13,142.93-18,126.96-8,427.65

Finding the Fourth Proportional to 13,142.93, 18,126.96 and 8,427.65

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Solution

The fourth proportional to 13,142.93, 18,126.96 and 8,427.65 is: 11,623.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,142.93 : 18,126.96 = 8,427.65 : x
  2. Step 2: Convert to fraction form
    13,142.93/18,126.96 = 8,427.65/x
  3. Step 3: Cross multiply
    13,142.93x = 18,126.96 × 8,427.65
  4. Step 4: Simplify right side
    13,142.93x = 152,767,674.44
  5. Step 5: Solve for x
    x = 152,767,674.44/13,142.93
  6. Step 6: Final answer
    x = 11,623.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.