Home / 13,813.20-20,695.40-13,356.40

Finding the Fourth Proportional to 13,813.20, 20,695.40 and 13,356.40

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Solution

The fourth proportional to 13,813.20, 20,695.40 and 13,356.40 is: 20,011.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,813.20 : 20,695.40 = 13,356.40 : x
  2. Step 2: Convert to fraction form
    13,813.20/20,695.40 = 13,356.40/x
  3. Step 3: Cross multiply
    13,813.20x = 20,695.40 × 13,356.40
  4. Step 4: Simplify right side
    13,813.20x = 276,416,040.56
  5. Step 5: Solve for x
    x = 276,416,040.56/13,813.20
  6. Step 6: Final answer
    x = 20,011.01

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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.