Home / 18,114.28-24,971.46-12,720.29

Finding the Fourth Proportional to 18,114.28, 24,971.46 and 12,720.29

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Solution

The fourth proportional to 18,114.28, 24,971.46 and 12,720.29 is: 17,535.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,114.28 : 24,971.46 = 12,720.29 : x
  2. Step 2: Convert to fraction form
    18,114.28/24,971.46 = 12,720.29/x
  3. Step 3: Cross multiply
    18,114.28x = 24,971.46 × 12,720.29
  4. Step 4: Simplify right side
    18,114.28x = 317,644,040.37
  5. Step 5: Solve for x
    x = 317,644,040.37/18,114.28
  6. Step 6: Final answer
    x = 17,535.56

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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.