Home / 20,577.87-30,882.45-13,555.53

Finding the Fourth Proportional to 20,577.87, 30,882.45 and 13,555.53

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Solution

The fourth proportional to 20,577.87, 30,882.45 and 13,555.53 is: 20,343.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,577.87 : 30,882.45 = 13,555.53 : x
  2. Step 2: Convert to fraction form
    20,577.87/30,882.45 = 13,555.53/x
  3. Step 3: Cross multiply
    20,577.87x = 30,882.45 × 13,555.53
  4. Step 4: Simplify right side
    20,577.87x = 418,627,977.45
  5. Step 5: Solve for x
    x = 418,627,977.45/20,577.87
  6. Step 6: Final answer
    x = 20,343.60

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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.