Home / 20,667.24-31,028.40-10,814.40

Finding the Fourth Proportional to 20,667.24, 31,028.40 and 10,814.40

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Solution

The fourth proportional to 20,667.24, 31,028.40 and 10,814.40 is: 16,236.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,667.24 : 31,028.40 = 10,814.40 : x
  2. Step 2: Convert to fraction form
    20,667.24/31,028.40 = 10,814.40/x
  3. Step 3: Cross multiply
    20,667.24x = 31,028.40 × 10,814.40
  4. Step 4: Simplify right side
    20,667.24x = 335,553,528.96
  5. Step 5: Solve for x
    x = 335,553,528.96/20,667.24
  6. Step 6: Final answer
    x = 16,236.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.