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Finding the Fourth Proportional to 18,406.58, 25,401.20 and 10,448.93

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Solution

The fourth proportional to 18,406.58, 25,401.20 and 10,448.93 is: 14,419.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,406.58 : 25,401.20 = 10,448.93 : x
  2. Step 2: Convert to fraction form
    18,406.58/25,401.20 = 10,448.93/x
  3. Step 3: Cross multiply
    18,406.58x = 25,401.20 × 10,448.93
  4. Step 4: Simplify right side
    18,406.58x = 265,415,371.97
  5. Step 5: Solve for x
    x = 265,415,371.97/18,406.58
  6. Step 6: Final answer
    x = 14,419.60

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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.