Home / 13,412.20-18,504.55-7,746.20

Finding the Fourth Proportional to 13,412.20, 18,504.55 and 7,746.20

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Solution

The fourth proportional to 13,412.20, 18,504.55 and 7,746.20 is: 10,687.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,412.20 : 18,504.55 = 7,746.20 : x
  2. Step 2: Convert to fraction form
    13,412.20/18,504.55 = 7,746.20/x
  3. Step 3: Cross multiply
    13,412.20x = 18,504.55 × 7,746.20
  4. Step 4: Simplify right side
    13,412.20x = 143,339,813.96
  5. Step 5: Solve for x
    x = 143,339,813.96/13,412.20
  6. Step 6: Final answer
    x = 10,687.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.