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Finding the Fourth Proportional to 30,213.70, 41,700.87 and 19,304.86

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Solution

The fourth proportional to 30,213.70, 41,700.87 and 19,304.86 is: 26,644.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,213.70 : 41,700.87 = 19,304.86 : x
  2. Step 2: Convert to fraction form
    30,213.70/41,700.87 = 19,304.86/x
  3. Step 3: Cross multiply
    30,213.70x = 41,700.87 × 19,304.86
  4. Step 4: Simplify right side
    30,213.70x = 805,029,457.23
  5. Step 5: Solve for x
    x = 805,029,457.23/30,213.70
  6. Step 6: Final answer
    x = 26,644.52

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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.