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Finding the Fourth Proportional to 15,873.81, 23,789.82 and 8,857.13

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Solution

The fourth proportional to 15,873.81, 23,789.82 and 8,857.13 is: 13,274.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,873.81 : 23,789.82 = 8,857.13 : x
  2. Step 2: Convert to fraction form
    15,873.81/23,789.82 = 8,857.13/x
  3. Step 3: Cross multiply
    15,873.81x = 23,789.82 × 8,857.13
  4. Step 4: Simplify right side
    15,873.81x = 210,709,365.18
  5. Step 5: Solve for x
    x = 210,709,365.18/15,873.81
  6. Step 6: Final answer
    x = 13,274.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.