Home / 13,169.98-18,157.80-7,862.86

Finding the Fourth Proportional to 13,169.98, 18,157.80 and 7,862.86

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Solution

The fourth proportional to 13,169.98, 18,157.80 and 7,862.86 is: 10,840.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,169.98 : 18,157.80 = 7,862.86 : x
  2. Step 2: Convert to fraction form
    13,169.98/18,157.80 = 7,862.86/x
  3. Step 3: Cross multiply
    13,169.98x = 18,157.80 × 7,862.86
  4. Step 4: Simplify right side
    13,169.98x = 142,772,239.31
  5. Step 5: Solve for x
    x = 142,772,239.31/13,169.98
  6. Step 6: Final answer
    x = 10,840.73

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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.