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Finding the Fourth Proportional to 35,476.60, 48,964.80 and 20,379.62

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Solution

The fourth proportional to 35,476.60, 48,964.80 and 20,379.62 is: 28,127.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,476.60 : 48,964.80 = 20,379.62 : x
  2. Step 2: Convert to fraction form
    35,476.60/48,964.80 = 20,379.62/x
  3. Step 3: Cross multiply
    35,476.60x = 48,964.80 × 20,379.62
  4. Step 4: Simplify right side
    35,476.60x = 997,883,772.55
  5. Step 5: Solve for x
    x = 997,883,772.55/35,476.60
  6. Step 6: Final answer
    x = 28,127.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.