Home / 13,890.88-19,168.92-7,924.48

Finding the Fourth Proportional to 13,890.88, 19,168.92 and 7,924.48

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Solution

The fourth proportional to 13,890.88, 19,168.92 and 7,924.48 is: 10,935.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.88 : 19,168.92 = 7,924.48 : x
  2. Step 2: Convert to fraction form
    13,890.88/19,168.92 = 7,924.48/x
  3. Step 3: Cross multiply
    13,890.88x = 19,168.92 × 7,924.48
  4. Step 4: Simplify right side
    13,890.88x = 151,903,723.16
  5. Step 5: Solve for x
    x = 151,903,723.16/13,890.88
  6. Step 6: Final answer
    x = 10,935.50

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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.