Home / 13,777.75-19,013.39-7,490.35

Finding the Fourth Proportional to 13,777.75, 19,013.39 and 7,490.35

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Solution

The fourth proportional to 13,777.75, 19,013.39 and 7,490.35 is: 10,336.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,777.75 : 19,013.39 = 7,490.35 : x
  2. Step 2: Convert to fraction form
    13,777.75/19,013.39 = 7,490.35/x
  3. Step 3: Cross multiply
    13,777.75x = 19,013.39 × 7,490.35
  4. Step 4: Simplify right side
    13,777.75x = 142,416,945.79
  5. Step 5: Solve for x
    x = 142,416,945.79/13,777.75
  6. Step 6: Final answer
    x = 10,336.73

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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.