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Finding the Fourth Proportional to 30,255.20, 45,382.80 and 14,703.20

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Solution

The fourth proportional to 30,255.20, 45,382.80 and 14,703.20 is: 22,054.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,255.20 : 45,382.80 = 14,703.20 : x
  2. Step 2: Convert to fraction form
    30,255.20/45,382.80 = 14,703.20/x
  3. Step 3: Cross multiply
    30,255.20x = 45,382.80 × 14,703.20
  4. Step 4: Simplify right side
    30,255.20x = 667,272,384.96
  5. Step 5: Solve for x
    x = 667,272,384.96/30,255.20
  6. Step 6: Final answer
    x = 22,054.80

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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.