Home / 18,478.20-25,483.32-12,196.92

Finding the Fourth Proportional to 18,478.20, 25,483.32 and 12,196.92

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Solution

The fourth proportional to 18,478.20, 25,483.32 and 12,196.92 is: 16,820.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,478.20 : 25,483.32 = 12,196.92 : x
  2. Step 2: Convert to fraction form
    18,478.20/25,483.32 = 12,196.92/x
  3. Step 3: Cross multiply
    18,478.20x = 25,483.32 × 12,196.92
  4. Step 4: Simplify right side
    18,478.20x = 310,818,015.37
  5. Step 5: Solve for x
    x = 310,818,015.37/18,478.20
  6. Step 6: Final answer
    x = 16,820.80

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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.