Home / 13,611.01-18,769.38-12,817.30

Finding the Fourth Proportional to 13,611.01, 18,769.38 and 12,817.30

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Solution

The fourth proportional to 13,611.01, 18,769.38 and 12,817.30 is: 17,674.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611.01 : 18,769.38 = 12,817.30 : x
  2. Step 2: Convert to fraction form
    13,611.01/18,769.38 = 12,817.30/x
  3. Step 3: Cross multiply
    13,611.01x = 18,769.38 × 12,817.30
  4. Step 4: Simplify right side
    13,611.01x = 240,572,774.27
  5. Step 5: Solve for x
    x = 240,572,774.27/13,611.01
  6. Step 6: Final answer
    x = 17,674.87

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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.