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Finding the Fourth Proportional to 30,269.78, 45,404.59 and 14,426.79

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Solution

The fourth proportional to 30,269.78, 45,404.59 and 14,426.79 is: 21,640.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,269.78 : 45,404.59 = 14,426.79 : x
  2. Step 2: Convert to fraction form
    30,269.78/45,404.59 = 14,426.79/x
  3. Step 3: Cross multiply
    30,269.78x = 45,404.59 × 14,426.79
  4. Step 4: Simplify right side
    30,269.78x = 655,042,484.97
  5. Step 5: Solve for x
    x = 655,042,484.97/30,269.78
  6. Step 6: Final answer
    x = 21,640.15

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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.