Home / 20,817.68-31,204.56-14,242.08

Finding the Fourth Proportional to 20,817.68, 31,204.56 and 14,242.08

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Solution

The fourth proportional to 20,817.68, 31,204.56 and 14,242.08 is: 21,348.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,817.68 : 31,204.56 = 14,242.08 : x
  2. Step 2: Convert to fraction form
    20,817.68/31,204.56 = 14,242.08/x
  3. Step 3: Cross multiply
    20,817.68x = 31,204.56 × 14,242.08
  4. Step 4: Simplify right side
    20,817.68x = 444,417,839.88
  5. Step 5: Solve for x
    x = 444,417,839.88/20,817.68
  6. Step 6: Final answer
    x = 21,348.10

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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.