Home / 13,645.26-18,835.44-8,612.78

Finding the Fourth Proportional to 13,645.26, 18,835.44 and 8,612.78

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Solution

The fourth proportional to 13,645.26, 18,835.44 and 8,612.78 is: 11,888.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,645.26 : 18,835.44 = 8,612.78 : x
  2. Step 2: Convert to fraction form
    13,645.26/18,835.44 = 8,612.78/x
  3. Step 3: Cross multiply
    13,645.26x = 18,835.44 × 8,612.78
  4. Step 4: Simplify right side
    13,645.26x = 162,225,480.40
  5. Step 5: Solve for x
    x = 162,225,480.40/13,645.26
  6. Step 6: Final answer
    x = 11,888.78

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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.