Home / 13,969.14-20,953.54-3,439.29

Finding the Fourth Proportional to 13,969.14, 20,953.54 and 3,439.29

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Solution

The fourth proportional to 13,969.14, 20,953.54 and 3,439.29 is: 5,158.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,969.14 : 20,953.54 = 3,439.29 : x
  2. Step 2: Convert to fraction form
    13,969.14/20,953.54 = 3,439.29/x
  3. Step 3: Cross multiply
    13,969.14x = 20,953.54 × 3,439.29
  4. Step 4: Simplify right side
    13,969.14x = 72,065,364.12
  5. Step 5: Solve for x
    x = 72,065,364.12/13,969.14
  6. Step 6: Final answer
    x = 5,158.90

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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.