Home / 20,775.40-31,162.30-6,924.40

Finding the Fourth Proportional to 20,775.40, 31,162.30 and 6,924.40

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Solution

The fourth proportional to 20,775.40, 31,162.30 and 6,924.40 is: 10,386.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.40 : 31,162.30 = 6,924.40 : x
  2. Step 2: Convert to fraction form
    20,775.40/31,162.30 = 6,924.40/x
  3. Step 3: Cross multiply
    20,775.40x = 31,162.30 × 6,924.40
  4. Step 4: Simplify right side
    20,775.40x = 215,780,230.12
  5. Step 5: Solve for x
    x = 215,780,230.12/20,775.40
  6. Step 6: Final answer
    x = 10,386.33

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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.