Home / 18,424.20-25,405.32-12,445.49

Finding the Fourth Proportional to 18,424.20, 25,405.32 and 12,445.49

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Solution

The fourth proportional to 18,424.20, 25,405.32 and 12,445.49 is: 17,161.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,424.20 : 25,405.32 = 12,445.49 : x
  2. Step 2: Convert to fraction form
    18,424.20/25,405.32 = 12,445.49/x
  3. Step 3: Cross multiply
    18,424.20x = 25,405.32 × 12,445.49
  4. Step 4: Simplify right side
    18,424.20x = 316,181,656.01
  5. Step 5: Solve for x
    x = 316,181,656.01/18,424.20
  6. Step 6: Final answer
    x = 17,161.21

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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.