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Finding the Fourth Proportional to 30,652.98, 42,306.04 and 28,651.88

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Solution

The fourth proportional to 30,652.98, 42,306.04 and 28,651.88 is: 39,544.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,652.98 : 42,306.04 = 28,651.88 : x
  2. Step 2: Convert to fraction form
    30,652.98/42,306.04 = 28,651.88/x
  3. Step 3: Cross multiply
    30,652.98x = 42,306.04 × 28,651.88
  4. Step 4: Simplify right side
    30,652.98x = 1,212,147,581.36
  5. Step 5: Solve for x
    x = 1,212,147,581.36/30,652.98
  6. Step 6: Final answer
    x = 39,544.20

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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.