Home / 20,907.28-31,357.32-6,867.58

Finding the Fourth Proportional to 20,907.28, 31,357.32 and 6,867.58

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Solution

The fourth proportional to 20,907.28, 31,357.32 and 6,867.58 is: 10,300.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,907.28 : 31,357.32 = 6,867.58 : x
  2. Step 2: Convert to fraction form
    20,907.28/31,357.32 = 6,867.58/x
  3. Step 3: Cross multiply
    20,907.28x = 31,357.32 × 6,867.58
  4. Step 4: Simplify right side
    20,907.28x = 215,348,903.69
  5. Step 5: Solve for x
    x = 215,348,903.69/20,907.28
  6. Step 6: Final answer
    x = 10,300.19

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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.