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Finding the Fourth Proportional to 18,776.81, 25,913.62 and 10,394.93

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Solution

The fourth proportional to 18,776.81, 25,913.62 and 10,394.93 is: 14,345.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,776.81 : 25,913.62 = 10,394.93 : x
  2. Step 2: Convert to fraction form
    18,776.81/25,913.62 = 10,394.93/x
  3. Step 3: Cross multiply
    18,776.81x = 25,913.62 × 10,394.93
  4. Step 4: Simplify right side
    18,776.81x = 269,370,343.72
  5. Step 5: Solve for x
    x = 269,370,343.72/18,776.81
  6. Step 6: Final answer
    x = 14,345.90

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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.