Home / 20,956.30-31,434.35-5,161.30

Finding the Fourth Proportional to 20,956.30, 31,434.35 and 5,161.30

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Solution

The fourth proportional to 20,956.30, 31,434.35 and 5,161.30 is: 7,741.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956.30 : 31,434.35 = 5,161.30 : x
  2. Step 2: Convert to fraction form
    20,956.30/31,434.35 = 5,161.30/x
  3. Step 3: Cross multiply
    20,956.30x = 31,434.35 × 5,161.30
  4. Step 4: Simplify right side
    20,956.30x = 162,242,006.26
  5. Step 5: Solve for x
    x = 162,242,006.26/20,956.30
  6. Step 6: Final answer
    x = 7,741.92

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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.