Home / 20,852.07-31,278.12-5,269.69

Finding the Fourth Proportional to 20,852.07, 31,278.12 and 5,269.69

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Solution

The fourth proportional to 20,852.07, 31,278.12 and 5,269.69 is: 7,904.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,852.07 : 31,278.12 = 5,269.69 : x
  2. Step 2: Convert to fraction form
    20,852.07/31,278.12 = 5,269.69/x
  3. Step 3: Cross multiply
    20,852.07x = 31,278.12 × 5,269.69
  4. Step 4: Simplify right side
    20,852.07x = 164,825,996.18
  5. Step 5: Solve for x
    x = 164,825,996.18/20,852.07
  6. Step 6: Final answer
    x = 7,904.54

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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.