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Finding the Fourth Proportional to 28,404.42, 42,606.63 and 7,627.92

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Solution

The fourth proportional to 28,404.42, 42,606.63 and 7,627.92 is: 11,441.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,404.42 : 42,606.63 = 7,627.92 : x
  2. Step 2: Convert to fraction form
    28,404.42/42,606.63 = 7,627.92/x
  3. Step 3: Cross multiply
    28,404.42x = 42,606.63 × 7,627.92
  4. Step 4: Simplify right side
    28,404.42x = 325,000,066.45
  5. Step 5: Solve for x
    x = 325,000,066.45/28,404.42
  6. Step 6: Final answer
    x = 11,441.88

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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.