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Finding the Fourth Proportional to 13,873.82, 19,143.63 and 7,905.60

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Solution

The fourth proportional to 13,873.82, 19,143.63 and 7,905.60 is: 10,908.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,873.82 : 19,143.63 = 7,905.60 : x
  2. Step 2: Convert to fraction form
    13,873.82/19,143.63 = 7,905.60/x
  3. Step 3: Cross multiply
    13,873.82x = 19,143.63 × 7,905.60
  4. Step 4: Simplify right side
    13,873.82x = 151,341,881.33
  5. Step 5: Solve for x
    x = 151,341,881.33/13,873.82
  6. Step 6: Final answer
    x = 10,908.45

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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.