Home / 13,171.43-18,176.93-7,869.30

Finding the Fourth Proportional to 13,171.43, 18,176.93 and 7,869.30

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Solution

The fourth proportional to 13,171.43, 18,176.93 and 7,869.30 is: 10,859.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,171.43 : 18,176.93 = 7,869.30 : x
  2. Step 2: Convert to fraction form
    13,171.43/18,176.93 = 7,869.30/x
  3. Step 3: Cross multiply
    13,171.43x = 18,176.93 × 7,869.30
  4. Step 4: Simplify right side
    13,171.43x = 143,039,675.90
  5. Step 5: Solve for x
    x = 143,039,675.90/13,171.43
  6. Step 6: Final answer
    x = 10,859.85

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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.