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Finding the Fourth Proportional to 30,397.60, 45,625.20 and 18,733.60

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Solution

The fourth proportional to 30,397.60, 45,625.20 and 18,733.60 is: 28,118.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,397.60 : 45,625.20 = 18,733.60 : x
  2. Step 2: Convert to fraction form
    30,397.60/45,625.20 = 18,733.60/x
  3. Step 3: Cross multiply
    30,397.60x = 45,625.20 × 18,733.60
  4. Step 4: Simplify right side
    30,397.60x = 854,724,246.72
  5. Step 5: Solve for x
    x = 854,724,246.72/30,397.60
  6. Step 6: Final answer
    x = 28,118.15

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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.