Home / 13,400.10-20,101.12-3,539.25

Finding the Fourth Proportional to 13,400.10, 20,101.12 and 3,539.25

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Solution

The fourth proportional to 13,400.10, 20,101.12 and 3,539.25 is: 5,309.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,400.10 : 20,101.12 = 3,539.25 : x
  2. Step 2: Convert to fraction form
    13,400.10/20,101.12 = 3,539.25/x
  3. Step 3: Cross multiply
    13,400.10x = 20,101.12 × 3,539.25
  4. Step 4: Simplify right side
    13,400.10x = 71,142,880.11
  5. Step 5: Solve for x
    x = 71,142,880.11/13,400.10
  6. Step 6: Final answer
    x = 5,309.13

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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.