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Finding the Fourth Proportional to 13,902.93, 19,187.89 and 7,935.80

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Solution

The fourth proportional to 13,902.93, 19,187.89 and 7,935.80 is: 10,952.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,902.93 : 19,187.89 = 7,935.80 : x
  2. Step 2: Convert to fraction form
    13,902.93/19,187.89 = 7,935.80/x
  3. Step 3: Cross multiply
    13,902.93x = 19,187.89 × 7,935.80
  4. Step 4: Simplify right side
    13,902.93x = 152,271,141.68
  5. Step 5: Solve for x
    x = 152,271,141.68/13,902.93
  6. Step 6: Final answer
    x = 10,952.45

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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.