Home / 13,871.10-19,142.26-7,902.74

Finding the Fourth Proportional to 13,871.10, 19,142.26 and 7,902.74

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Solution

The fourth proportional to 13,871.10, 19,142.26 and 7,902.74 is: 10,905.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,871.10 : 19,142.26 = 7,902.74 : x
  2. Step 2: Convert to fraction form
    13,871.10/19,142.26 = 7,902.74/x
  3. Step 3: Cross multiply
    13,871.10x = 19,142.26 × 7,902.74
  4. Step 4: Simplify right side
    13,871.10x = 151,276,303.79
  5. Step 5: Solve for x
    x = 151,276,303.79/13,871.10
  6. Step 6: Final answer
    x = 10,905.86

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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.