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Finding the Fourth Proportional to 30,348.48, 45,531.54 and 12,575.88

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Solution

The fourth proportional to 30,348.48, 45,531.54 and 12,575.88 is: 18,867.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,348.48 : 45,531.54 = 12,575.88 : x
  2. Step 2: Convert to fraction form
    30,348.48/45,531.54 = 12,575.88/x
  3. Step 3: Cross multiply
    30,348.48x = 45,531.54 × 12,575.88
  4. Step 4: Simplify right side
    30,348.48x = 572,599,183.26
  5. Step 5: Solve for x
    x = 572,599,183.26/30,348.48
  6. Step 6: Final answer
    x = 18,867.47

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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.