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Finding the Fourth Proportional to 18,438, 25,444.62 and 10,054.68

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Solution

The fourth proportional to 18,438, 25,444.62 and 10,054.68 is: 13,875.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,438 : 25,444.62 = 10,054.68 : x
  2. Step 2: Convert to fraction form
    18,438/25,444.62 = 10,054.68/x
  3. Step 3: Cross multiply
    18,438x = 25,444.62 × 10,054.68
  4. Step 4: Simplify right side
    18,438x = 255,837,511.82
  5. Step 5: Solve for x
    x = 255,837,511.82/18,438
  6. Step 6: Final answer
    x = 13,875.56

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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.