Home / 18,338.46-27,478.86-14,188.80

Finding the Fourth Proportional to 18,338.46, 27,478.86 and 14,188.80

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Solution

The fourth proportional to 18,338.46, 27,478.86 and 14,188.80 is: 21,260.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,338.46 : 27,478.86 = 14,188.80 : x
  2. Step 2: Convert to fraction form
    18,338.46/27,478.86 = 14,188.80/x
  3. Step 3: Cross multiply
    18,338.46x = 27,478.86 × 14,188.80
  4. Step 4: Simplify right side
    18,338.46x = 389,892,048.77
  5. Step 5: Solve for x
    x = 389,892,048.77/18,338.46
  6. Step 6: Final answer
    x = 21,260.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.