Home / 20,577.96-30,860.58-7,428.66

Finding the Fourth Proportional to 20,577.96, 30,860.58 and 7,428.66

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Solution

The fourth proportional to 20,577.96, 30,860.58 and 7,428.66 is: 11,140.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,577.96 : 30,860.58 = 7,428.66 : x
  2. Step 2: Convert to fraction form
    20,577.96/30,860.58 = 7,428.66/x
  3. Step 3: Cross multiply
    20,577.96x = 30,860.58 × 7,428.66
  4. Step 4: Simplify right side
    20,577.96x = 229,252,756.22
  5. Step 5: Solve for x
    x = 229,252,756.22/20,577.96
  6. Step 6: Final answer
    x = 11,140.69

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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.