Home / 30,267.60-45,385.20-12,717.60

Finding the Fourth Proportional to 30,267.60, 45,385.20 and 12,717.60

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Solution

The fourth proportional to 30,267.60, 45,385.20 and 12,717.60 is: 19,069.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,267.60 : 45,385.20 = 12,717.60 : x
  2. Step 2: Convert to fraction form
    30,267.60/45,385.20 = 12,717.60/x
  3. Step 3: Cross multiply
    30,267.60x = 45,385.20 × 12,717.60
  4. Step 4: Simplify right side
    30,267.60x = 577,190,819.52
  5. Step 5: Solve for x
    x = 577,190,819.52/30,267.60
  6. Step 6: Final answer
    x = 19,069.59

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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.