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Finding the Fourth Proportional to 18,449, 25,459.62 and 10,065.50

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Solution

The fourth proportional to 18,449, 25,459.62 and 10,065.50 is: 13,890.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,449 : 25,459.62 = 10,065.50 : x
  2. Step 2: Convert to fraction form
    18,449/25,459.62 = 10,065.50/x
  3. Step 3: Cross multiply
    18,449x = 25,459.62 × 10,065.50
  4. Step 4: Simplify right side
    18,449x = 256,263,805.11
  5. Step 5: Solve for x
    x = 256,263,805.11/18,449
  6. Step 6: Final answer
    x = 13,890.39

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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.