Home / 13,457.33-18,579.72-8,679.65

Finding the Fourth Proportional to 13,457.33, 18,579.72 and 8,679.65

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Solution

The fourth proportional to 13,457.33, 18,579.72 and 8,679.65 is: 11,983.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,457.33 : 18,579.72 = 8,679.65 : x
  2. Step 2: Convert to fraction form
    13,457.33/18,579.72 = 8,679.65/x
  3. Step 3: Cross multiply
    13,457.33x = 18,579.72 × 8,679.65
  4. Step 4: Simplify right side
    13,457.33x = 161,265,373.80
  5. Step 5: Solve for x
    x = 161,265,373.80/13,457.33
  6. Step 6: Final answer
    x = 11,983.46

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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.