Home / 14,518.55-21,777.71-3,988.55

Finding the Fourth Proportional to 14,518.55, 21,777.71 and 3,988.55

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Solution

The fourth proportional to 14,518.55, 21,777.71 and 3,988.55 is: 5,982.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,518.55 : 21,777.71 = 3,988.55 : x
  2. Step 2: Convert to fraction form
    14,518.55/21,777.71 = 3,988.55/x
  3. Step 3: Cross multiply
    14,518.55x = 21,777.71 × 3,988.55
  4. Step 4: Simplify right side
    14,518.55x = 86,861,485.22
  5. Step 5: Solve for x
    x = 86,861,485.22/14,518.55
  6. Step 6: Final answer
    x = 5,982.79

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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.