Home / 13,909.87-20,740.73-12,364.39

Finding the Fourth Proportional to 13,909.87, 20,740.73 and 12,364.39

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Solution

The fourth proportional to 13,909.87, 20,740.73 and 12,364.39 is: 18,436.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.87 : 20,740.73 = 12,364.39 : x
  2. Step 2: Convert to fraction form
    13,909.87/20,740.73 = 12,364.39/x
  3. Step 3: Cross multiply
    13,909.87x = 20,740.73 × 12,364.39
  4. Step 4: Simplify right side
    13,909.87x = 256,446,474.60
  5. Step 5: Solve for x
    x = 256,446,474.60/13,909.87
  6. Step 6: Final answer
    x = 18,436.30

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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.