Home / 13,449.20-18,558.88-7,783.94

Finding the Fourth Proportional to 13,449.20, 18,558.88 and 7,783.94

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Solution

The fourth proportional to 13,449.20, 18,558.88 and 7,783.94 is: 10,741.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,449.20 : 18,558.88 = 7,783.94 : x
  2. Step 2: Convert to fraction form
    13,449.20/18,558.88 = 7,783.94/x
  3. Step 3: Cross multiply
    13,449.20x = 18,558.88 × 7,783.94
  4. Step 4: Simplify right side
    13,449.20x = 144,461,208.39
  5. Step 5: Solve for x
    x = 144,461,208.39/13,449.20
  6. Step 6: Final answer
    x = 10,741.25

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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.