Home / 13,449.80-18,562.99-7,784.70

Finding the Fourth Proportional to 13,449.80, 18,562.99 and 7,784.70

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Solution

The fourth proportional to 13,449.80, 18,562.99 and 7,784.70 is: 10,744.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,449.80 : 18,562.99 = 7,784.70 : x
  2. Step 2: Convert to fraction form
    13,449.80/18,562.99 = 7,784.70/x
  3. Step 3: Cross multiply
    13,449.80x = 18,562.99 × 7,784.70
  4. Step 4: Simplify right side
    13,449.80x = 144,507,308.25
  5. Step 5: Solve for x
    x = 144,507,308.25/13,449.80
  6. Step 6: Final answer
    x = 10,744.20

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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.