Home / 18,817.20-25,971.12-10,858.32

Finding the Fourth Proportional to 18,817.20, 25,971.12 and 10,858.32

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Solution

The fourth proportional to 18,817.20, 25,971.12 and 10,858.32 is: 14,986.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,817.20 : 25,971.12 = 10,858.32 : x
  2. Step 2: Convert to fraction form
    18,817.20/25,971.12 = 10,858.32/x
  3. Step 3: Cross multiply
    18,817.20x = 25,971.12 × 10,858.32
  4. Step 4: Simplify right side
    18,817.20x = 282,002,731.72
  5. Step 5: Solve for x
    x = 282,002,731.72/18,817.20
  6. Step 6: Final answer
    x = 14,986.43

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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.