Home / 13,320.84-18,383.37-7,657.43

Finding the Fourth Proportional to 13,320.84, 18,383.37 and 7,657.43

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Solution

The fourth proportional to 13,320.84, 18,383.37 and 7,657.43 is: 10,567.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.84 : 18,383.37 = 7,657.43 : x
  2. Step 2: Convert to fraction form
    13,320.84/18,383.37 = 7,657.43/x
  3. Step 3: Cross multiply
    13,320.84x = 18,383.37 × 7,657.43
  4. Step 4: Simplify right side
    13,320.84x = 140,769,277.02
  5. Step 5: Solve for x
    x = 140,769,277.02/13,320.84
  6. Step 6: Final answer
    x = 10,567.60

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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.