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Finding the Fourth Proportional to 34,815.84, 48,051.12 and 20,672.16

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Solution

The fourth proportional to 34,815.84, 48,051.12 and 20,672.16 is: 28,530.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,815.84 : 48,051.12 = 20,672.16 : x
  2. Step 2: Convert to fraction form
    34,815.84/48,051.12 = 20,672.16/x
  3. Step 3: Cross multiply
    34,815.84x = 48,051.12 × 20,672.16
  4. Step 4: Simplify right side
    34,815.84x = 993,320,440.82
  5. Step 5: Solve for x
    x = 993,320,440.82/34,815.84
  6. Step 6: Final answer
    x = 28,530.70

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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.