Home / 13,909.27-19,192.92-7,940.56

Finding the Fourth Proportional to 13,909.27, 19,192.92 and 7,940.56

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Solution

The fourth proportional to 13,909.27, 19,192.92 and 7,940.56 is: 10,956.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.27 : 19,192.92 = 7,940.56 : x
  2. Step 2: Convert to fraction form
    13,909.27/19,192.92 = 7,940.56/x
  3. Step 3: Cross multiply
    13,909.27x = 19,192.92 × 7,940.56
  4. Step 4: Simplify right side
    13,909.27x = 152,402,532.84
  5. Step 5: Solve for x
    x = 152,402,532.84/13,909.27
  6. Step 6: Final answer
    x = 10,956.90

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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.