Home / 20,401.31-30,577.36-10,535.21

Finding the Fourth Proportional to 20,401.31, 30,577.36 and 10,535.21

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Solution

The fourth proportional to 20,401.31, 30,577.36 and 10,535.21 is: 15,790.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.31 : 30,577.36 = 10,535.21 : x
  2. Step 2: Convert to fraction form
    20,401.31/30,577.36 = 10,535.21/x
  3. Step 3: Cross multiply
    20,401.31x = 30,577.36 × 10,535.21
  4. Step 4: Simplify right side
    20,401.31x = 322,138,908.85
  5. Step 5: Solve for x
    x = 322,138,908.85/20,401.31
  6. Step 6: Final answer
    x = 15,790.11

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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.