Home / 18,418.18-25,420.41-10,864.06

Finding the Fourth Proportional to 18,418.18, 25,420.41 and 10,864.06

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Solution

The fourth proportional to 18,418.18, 25,420.41 and 10,864.06 is: 14,994.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,418.18 : 25,420.41 = 10,864.06 : x
  2. Step 2: Convert to fraction form
    18,418.18/25,420.41 = 10,864.06/x
  3. Step 3: Cross multiply
    18,418.18x = 25,420.41 × 10,864.06
  4. Step 4: Simplify right side
    18,418.18x = 276,168,765.36
  5. Step 5: Solve for x
    x = 276,168,765.36/18,418.18
  6. Step 6: Final answer
    x = 14,994.36

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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.