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Finding the Fourth Proportional to 13,950.78, 19,251.73 and 7,900.89

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Solution

The fourth proportional to 13,950.78, 19,251.73 and 7,900.89 is: 10,903.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,950.78 : 19,251.73 = 7,900.89 : x
  2. Step 2: Convert to fraction form
    13,950.78/19,251.73 = 7,900.89/x
  3. Step 3: Cross multiply
    13,950.78x = 19,251.73 × 7,900.89
  4. Step 4: Simplify right side
    13,950.78x = 152,105,802.57
  5. Step 5: Solve for x
    x = 152,105,802.57/13,950.78
  6. Step 6: Final answer
    x = 10,903.03

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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.