Home / 14,975.06-20,666.59-8,687.43

Finding the Fourth Proportional to 14,975.06, 20,666.59 and 8,687.43

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Solution

The fourth proportional to 14,975.06, 20,666.59 and 8,687.43 is: 11,989.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,975.06 : 20,666.59 = 8,687.43 : x
  2. Step 2: Convert to fraction form
    14,975.06/20,666.59 = 8,687.43/x
  3. Step 3: Cross multiply
    14,975.06x = 20,666.59 × 8,687.43
  4. Step 4: Simplify right side
    14,975.06x = 179,539,532.25
  5. Step 5: Solve for x
    x = 179,539,532.25/14,975.06
  6. Step 6: Final answer
    x = 11,989.24

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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.