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Finding the Fourth Proportional to 30,472.64, 45,708.96 and 10,740.80

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Solution

The fourth proportional to 30,472.64, 45,708.96 and 10,740.80 is: 16,111.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,472.64 : 45,708.96 = 10,740.80 : x
  2. Step 2: Convert to fraction form
    30,472.64/45,708.96 = 10,740.80/x
  3. Step 3: Cross multiply
    30,472.64x = 45,708.96 × 10,740.80
  4. Step 4: Simplify right side
    30,472.64x = 490,950,797.57
  5. Step 5: Solve for x
    x = 490,950,797.57/30,472.64
  6. Step 6: Final answer
    x = 16,111.20

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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.