Home / 18,421.28-27,636.56-5,274.80

Finding the Fourth Proportional to 18,421.28, 27,636.56 and 5,274.80

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Solution

The fourth proportional to 18,421.28, 27,636.56 and 5,274.80 is: 7,913.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,421.28 : 27,636.56 = 5,274.80 : x
  2. Step 2: Convert to fraction form
    18,421.28/27,636.56 = 5,274.80/x
  3. Step 3: Cross multiply
    18,421.28x = 27,636.56 × 5,274.80
  4. Step 4: Simplify right side
    18,421.28x = 145,777,326.69
  5. Step 5: Solve for x
    x = 145,777,326.69/18,421.28
  6. Step 6: Final answer
    x = 7,913.53

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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.