Home / 13,016.80-19,543.20-8,365.60

Finding the Fourth Proportional to 13,016.80, 19,543.20 and 8,365.60

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Solution

The fourth proportional to 13,016.80, 19,543.20 and 8,365.60 is: 12,559.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,016.80 : 19,543.20 = 8,365.60 : x
  2. Step 2: Convert to fraction form
    13,016.80/19,543.20 = 8,365.60/x
  3. Step 3: Cross multiply
    13,016.80x = 19,543.20 × 8,365.60
  4. Step 4: Simplify right side
    13,016.80x = 163,490,593.92
  5. Step 5: Solve for x
    x = 163,490,593.92/13,016.80
  6. Step 6: Final answer
    x = 12,559.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.