Home / 13,459.08-18,582-8,680.80

Finding the Fourth Proportional to 13,459.08, 18,582 and 8,680.80

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Solution

The fourth proportional to 13,459.08, 18,582 and 8,680.80 is: 11,984.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,459.08 : 18,582 = 8,680.80 : x
  2. Step 2: Convert to fraction form
    13,459.08/18,582 = 8,680.80/x
  3. Step 3: Cross multiply
    13,459.08x = 18,582 × 8,680.80
  4. Step 4: Simplify right side
    13,459.08x = 161,306,625.60
  5. Step 5: Solve for x
    x = 161,306,625.60/13,459.08
  6. Step 6: Final answer
    x = 11,984.97

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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.