Home / 18,420.37-25,418.78-11,346.91

Finding the Fourth Proportional to 18,420.37, 25,418.78 and 11,346.91

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Solution

The fourth proportional to 18,420.37, 25,418.78 and 11,346.91 is: 15,657.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,420.37 : 25,418.78 = 11,346.91 : x
  2. Step 2: Convert to fraction form
    18,420.37/25,418.78 = 11,346.91/x
  3. Step 3: Cross multiply
    18,420.37x = 25,418.78 × 11,346.91
  4. Step 4: Simplify right side
    18,420.37x = 288,424,531.24
  5. Step 5: Solve for x
    x = 288,424,531.24/18,420.37
  6. Step 6: Final answer
    x = 15,657.91

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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.