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Finding the Fourth Proportional to 30,420.56, 45,630.84 and 10,696.86

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Solution

The fourth proportional to 30,420.56, 45,630.84 and 10,696.86 is: 16,045.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,420.56 : 45,630.84 = 10,696.86 : x
  2. Step 2: Convert to fraction form
    30,420.56/45,630.84 = 10,696.86/x
  3. Step 3: Cross multiply
    30,420.56x = 45,630.84 × 10,696.86
  4. Step 4: Simplify right side
    30,420.56x = 488,106,747.28
  5. Step 5: Solve for x
    x = 488,106,747.28/30,420.56
  6. Step 6: Final answer
    x = 16,045.29

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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.