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Finding the Fourth Proportional to 18,419.84, 25,418.50 and 10,460.98

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Solution

The fourth proportional to 18,419.84, 25,418.50 and 10,460.98 is: 14,435.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,419.84 : 25,418.50 = 10,460.98 : x
  2. Step 2: Convert to fraction form
    18,419.84/25,418.50 = 10,460.98/x
  3. Step 3: Cross multiply
    18,419.84x = 25,418.50 × 10,460.98
  4. Step 4: Simplify right side
    18,419.84x = 265,902,420.13
  5. Step 5: Solve for x
    x = 265,902,420.13/18,419.84
  6. Step 6: Final answer
    x = 14,435.65

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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.