Home / 18,816.20-25,969.74-10,857.32

Finding the Fourth Proportional to 18,816.20, 25,969.74 and 10,857.32

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Solution

The fourth proportional to 18,816.20, 25,969.74 and 10,857.32 is: 14,985.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,816.20 : 25,969.74 = 10,857.32 : x
  2. Step 2: Convert to fraction form
    18,816.20/25,969.74 = 10,857.32/x
  3. Step 3: Cross multiply
    18,816.20x = 25,969.74 × 10,857.32
  4. Step 4: Simplify right side
    18,816.20x = 281,961,777.50
  5. Step 5: Solve for x
    x = 281,961,777.50/18,816.20
  6. Step 6: Final answer
    x = 14,985.05

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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.