Home / 20,573.76-30,860.64-4,991.25

Finding the Fourth Proportional to 20,573.76, 30,860.64 and 4,991.25

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Solution

The fourth proportional to 20,573.76, 30,860.64 and 4,991.25 is: 7,486.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,573.76 : 30,860.64 = 4,991.25 : x
  2. Step 2: Convert to fraction form
    20,573.76/30,860.64 = 4,991.25/x
  3. Step 3: Cross multiply
    20,573.76x = 30,860.64 × 4,991.25
  4. Step 4: Simplify right side
    20,573.76x = 154,033,169.40
  5. Step 5: Solve for x
    x = 154,033,169.40/20,573.76
  6. Step 6: Final answer
    x = 7,486.88

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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.