Home / 13,157.24-18,149.46-8,436.20

Finding the Fourth Proportional to 13,157.24, 18,149.46 and 8,436.20

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Solution

The fourth proportional to 13,157.24, 18,149.46 and 8,436.20 is: 11,637.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,157.24 : 18,149.46 = 8,436.20 : x
  2. Step 2: Convert to fraction form
    13,157.24/18,149.46 = 8,436.20/x
  3. Step 3: Cross multiply
    13,157.24x = 18,149.46 × 8,436.20
  4. Step 4: Simplify right side
    13,157.24x = 153,112,474.45
  5. Step 5: Solve for x
    x = 153,112,474.45/13,157.24
  6. Step 6: Final answer
    x = 11,637.13

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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.