Home / 18,774.72-28,156.32-12,968.64

Finding the Fourth Proportional to 18,774.72, 28,156.32 and 12,968.64

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Solution

The fourth proportional to 18,774.72, 28,156.32 and 12,968.64 is: 19,448.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,774.72 : 28,156.32 = 12,968.64 : x
  2. Step 2: Convert to fraction form
    18,774.72/28,156.32 = 12,968.64/x
  3. Step 3: Cross multiply
    18,774.72x = 28,156.32 × 12,968.64
  4. Step 4: Simplify right side
    18,774.72x = 365,149,177.80
  5. Step 5: Solve for x
    x = 365,149,177.80/18,774.72
  6. Step 6: Final answer
    x = 19,448.98

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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.