Home / 42,819.60-64,234.20-13,237.20

Finding the Fourth Proportional to 42,819.60, 64,234.20 and 13,237.20

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Solution

The fourth proportional to 42,819.60, 64,234.20 and 13,237.20 is: 19,857.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,819.60 : 64,234.20 = 13,237.20 : x
  2. Step 2: Convert to fraction form
    42,819.60/64,234.20 = 13,237.20/x
  3. Step 3: Cross multiply
    42,819.60x = 64,234.20 × 13,237.20
  4. Step 4: Simplify right side
    42,819.60x = 850,280,952.24
  5. Step 5: Solve for x
    x = 850,280,952.24/42,819.60
  6. Step 6: Final answer
    x = 19,857.28

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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.