Home / 13,778.07-19,013.73-7,490.43

Finding the Fourth Proportional to 13,778.07, 19,013.73 and 7,490.43

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Solution

The fourth proportional to 13,778.07, 19,013.73 and 7,490.43 is: 10,336.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.07 : 19,013.73 = 7,490.43 : x
  2. Step 2: Convert to fraction form
    13,778.07/19,013.73 = 7,490.43/x
  3. Step 3: Cross multiply
    13,778.07x = 19,013.73 × 7,490.43
  4. Step 4: Simplify right side
    13,778.07x = 142,421,013.60
  5. Step 5: Solve for x
    x = 142,421,013.60/13,778.07
  6. Step 6: Final answer
    x = 10,336.79

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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.