Home / 13,611.52-20,334.58-8,641.36

Finding the Fourth Proportional to 13,611.52, 20,334.58 and 8,641.36

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Solution

The fourth proportional to 13,611.52, 20,334.58 and 8,641.36 is: 12,909.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611.52 : 20,334.58 = 8,641.36 : x
  2. Step 2: Convert to fraction form
    13,611.52/20,334.58 = 8,641.36/x
  3. Step 3: Cross multiply
    13,611.52x = 20,334.58 × 8,641.36
  4. Step 4: Simplify right side
    13,611.52x = 175,718,426.23
  5. Step 5: Solve for x
    x = 175,718,426.23/13,611.52
  6. Step 6: Final answer
    x = 12,909.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.