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Finding the Fourth Proportional to 30,661.61, 45,972.47 and 14,644.56

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Solution

The fourth proportional to 30,661.61, 45,972.47 and 14,644.56 is: 21,957.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,661.61 : 45,972.47 = 14,644.56 : x
  2. Step 2: Convert to fraction form
    30,661.61/45,972.47 = 14,644.56/x
  3. Step 3: Cross multiply
    30,661.61x = 45,972.47 × 14,644.56
  4. Step 4: Simplify right side
    30,661.61x = 673,246,631.87
  5. Step 5: Solve for x
    x = 673,246,631.87/30,661.61
  6. Step 6: Final answer
    x = 21,957.32

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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.