Home / 13,157.88-18,152.40-8,619.27

Finding the Fourth Proportional to 13,157.88, 18,152.40 and 8,619.27

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Solution

The fourth proportional to 13,157.88, 18,152.40 and 8,619.27 is: 11,891.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,157.88 : 18,152.40 = 8,619.27 : x
  2. Step 2: Convert to fraction form
    13,157.88/18,152.40 = 8,619.27/x
  3. Step 3: Cross multiply
    13,157.88x = 18,152.40 × 8,619.27
  4. Step 4: Simplify right side
    13,157.88x = 156,460,436.75
  5. Step 5: Solve for x
    x = 156,460,436.75/13,157.88
  6. Step 6: Final answer
    x = 11,891.01

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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.