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Finding the Fourth Proportional to 30,589.79, 45,884.75 and 10,868.31

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Solution

The fourth proportional to 30,589.79, 45,884.75 and 10,868.31 is: 16,302.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,589.79 : 45,884.75 = 10,868.31 : x
  2. Step 2: Convert to fraction form
    30,589.79/45,884.75 = 10,868.31/x
  3. Step 3: Cross multiply
    30,589.79x = 45,884.75 × 10,868.31
  4. Step 4: Simplify right side
    30,589.79x = 498,689,632.93
  5. Step 5: Solve for x
    x = 498,689,632.93/30,589.79
  6. Step 6: Final answer
    x = 16,302.49

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Double scale
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Similar ratio
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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.