Home / 18,931.96-28,397.82-5,784.28

Finding the Fourth Proportional to 18,931.96, 28,397.82 and 5,784.28

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Solution

The fourth proportional to 18,931.96, 28,397.82 and 5,784.28 is: 8,676.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,931.96 : 28,397.82 = 5,784.28 : x
  2. Step 2: Convert to fraction form
    18,931.96/28,397.82 = 5,784.28/x
  3. Step 3: Cross multiply
    18,931.96x = 28,397.82 × 5,784.28
  4. Step 4: Simplify right side
    18,931.96x = 164,260,942.27
  5. Step 5: Solve for x
    x = 164,260,942.27/18,931.96
  6. Step 6: Final answer
    x = 8,676.38

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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.