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Finding the Fourth Proportional to 14,412.80, 19,889.34 and 8,125.04

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Solution

The fourth proportional to 14,412.80, 19,889.34 and 8,125.04 is: 11,212.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,412.80 : 19,889.34 = 8,125.04 : x
  2. Step 2: Convert to fraction form
    14,412.80/19,889.34 = 8,125.04/x
  3. Step 3: Cross multiply
    14,412.80x = 19,889.34 × 8,125.04
  4. Step 4: Simplify right side
    14,412.80x = 161,601,683.07
  5. Step 5: Solve for x
    x = 161,601,683.07/14,412.80
  6. Step 6: Final answer
    x = 11,212.37

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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.