Home / 20,405.10-30,635.73-10,551.18

Finding the Fourth Proportional to 20,405.10, 30,635.73 and 10,551.18

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Solution

The fourth proportional to 20,405.10, 30,635.73 and 10,551.18 is: 15,841.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,405.10 : 30,635.73 = 10,551.18 : x
  2. Step 2: Convert to fraction form
    20,405.10/30,635.73 = 10,551.18/x
  3. Step 3: Cross multiply
    20,405.10x = 30,635.73 × 10,551.18
  4. Step 4: Simplify right side
    20,405.10x = 323,243,101.66
  5. Step 5: Solve for x
    x = 323,243,101.66/20,405.10
  6. Step 6: Final answer
    x = 15,841.29

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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.