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Finding the Fourth Proportional to 30,225.60, 45,354.60 and 12,697.20

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Solution

The fourth proportional to 30,225.60, 45,354.60 and 12,697.20 is: 19,052.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,225.60 : 45,354.60 = 12,697.20 : x
  2. Step 2: Convert to fraction form
    30,225.60/45,354.60 = 12,697.20/x
  3. Step 3: Cross multiply
    30,225.60x = 45,354.60 × 12,697.20
  4. Step 4: Simplify right side
    30,225.60x = 575,876,427.12
  5. Step 5: Solve for x
    x = 575,876,427.12/30,225.60
  6. Step 6: Final answer
    x = 19,052.61

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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.