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Finding the Fourth Proportional to 30,392.80, 45,589.20 and 9,616.30

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Solution

The fourth proportional to 30,392.80, 45,589.20 and 9,616.30 is: 14,424.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,392.80 : 45,589.20 = 9,616.30 : x
  2. Step 2: Convert to fraction form
    30,392.80/45,589.20 = 9,616.30/x
  3. Step 3: Cross multiply
    30,392.80x = 45,589.20 × 9,616.30
  4. Step 4: Simplify right side
    30,392.80x = 438,399,423.96
  5. Step 5: Solve for x
    x = 438,399,423.96/30,392.80
  6. Step 6: Final answer
    x = 14,424.45

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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.