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Finding the Fourth Proportional to 30,656.84, 45,984.79 and 8,469.72

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Solution

The fourth proportional to 30,656.84, 45,984.79 and 8,469.72 is: 12,704.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,656.84 : 45,984.79 = 8,469.72 : x
  2. Step 2: Convert to fraction form
    30,656.84/45,984.79 = 8,469.72/x
  3. Step 3: Cross multiply
    30,656.84x = 45,984.79 × 8,469.72
  4. Step 4: Simplify right side
    30,656.84x = 389,478,253.21
  5. Step 5: Solve for x
    x = 389,478,253.21/30,656.84
  6. Step 6: Final answer
    x = 12,704.45

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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.