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Finding the Fourth Proportional to 18,418.26, 25,410.01 and 10,459.40

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Solution

The fourth proportional to 18,418.26, 25,410.01 and 10,459.40 is: 14,429.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,418.26 : 25,410.01 = 10,459.40 : x
  2. Step 2: Convert to fraction form
    18,418.26/25,410.01 = 10,459.40/x
  3. Step 3: Cross multiply
    18,418.26x = 25,410.01 × 10,459.40
  4. Step 4: Simplify right side
    18,418.26x = 265,773,458.59
  5. Step 5: Solve for x
    x = 265,773,458.59/18,418.26
  6. Step 6: Final answer
    x = 14,429.89

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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.