Home / 13,628.67-18,805.46-7,659.20

Finding the Fourth Proportional to 13,628.67, 18,805.46 and 7,659.20

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Solution

The fourth proportional to 13,628.67, 18,805.46 and 7,659.20 is: 10,568.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,628.67 : 18,805.46 = 7,659.20 : x
  2. Step 2: Convert to fraction form
    13,628.67/18,805.46 = 7,659.20/x
  3. Step 3: Cross multiply
    13,628.67x = 18,805.46 × 7,659.20
  4. Step 4: Simplify right side
    13,628.67x = 144,034,646.91
  5. Step 5: Solve for x
    x = 144,034,646.91/13,628.67
  6. Step 6: Final answer
    x = 10,568.50

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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.