Home / 19,168.02-28,748.70-5,313.78

Finding the Fourth Proportional to 19,168.02, 28,748.70 and 5,313.78

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Solution

The fourth proportional to 19,168.02, 28,748.70 and 5,313.78 is: 7,969.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,168.02 : 28,748.70 = 5,313.78 : x
  2. Step 2: Convert to fraction form
    19,168.02/28,748.70 = 5,313.78/x
  3. Step 3: Cross multiply
    19,168.02x = 28,748.70 × 5,313.78
  4. Step 4: Simplify right side
    19,168.02x = 152,764,267.09
  5. Step 5: Solve for x
    x = 152,764,267.09/19,168.02
  6. Step 6: Final answer
    x = 7,969.75

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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.