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Finding the Fourth Proportional to 30,337.80, 45,506.70 and 19,293.45

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Solution

The fourth proportional to 30,337.80, 45,506.70 and 19,293.45 is: 28,940.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,337.80 : 45,506.70 = 19,293.45 : x
  2. Step 2: Convert to fraction form
    30,337.80/45,506.70 = 19,293.45/x
  3. Step 3: Cross multiply
    30,337.80x = 45,506.70 × 19,293.45
  4. Step 4: Simplify right side
    30,337.80x = 877,981,241.12
  5. Step 5: Solve for x
    x = 877,981,241.12/30,337.80
  6. Step 6: Final answer
    x = 28,940.18

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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.