Home / 20,914.88-31,293.81-14,687.06

Finding the Fourth Proportional to 20,914.88, 31,293.81 and 14,687.06

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Solution

The fourth proportional to 20,914.88, 31,293.81 and 14,687.06 is: 21,975.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.88 : 31,293.81 = 14,687.06 : x
  2. Step 2: Convert to fraction form
    20,914.88/31,293.81 = 14,687.06/x
  3. Step 3: Cross multiply
    20,914.88x = 31,293.81 × 14,687.06
  4. Step 4: Simplify right side
    20,914.88x = 459,613,908.63
  5. Step 5: Solve for x
    x = 459,613,908.63/20,914.88
  6. Step 6: Final answer
    x = 21,975.46

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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.