Home / 14,975.52-20,667.24-8,687.90

Finding the Fourth Proportional to 14,975.52, 20,667.24 and 8,687.90

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Solution

The fourth proportional to 14,975.52, 20,667.24 and 8,687.90 is: 11,989.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,975.52 : 20,667.24 = 8,687.90 : x
  2. Step 2: Convert to fraction form
    14,975.52/20,667.24 = 8,687.90/x
  3. Step 3: Cross multiply
    14,975.52x = 20,667.24 × 8,687.90
  4. Step 4: Simplify right side
    14,975.52x = 179,554,811.06
  5. Step 5: Solve for x
    x = 179,554,811.06/14,975.52
  6. Step 6: Final answer
    x = 11,989.89

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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.