Home / 18,420.02-27,621.91-5,269.40

Finding the Fourth Proportional to 18,420.02, 27,621.91 and 5,269.40

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Solution

The fourth proportional to 18,420.02, 27,621.91 and 5,269.40 is: 7,901.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,420.02 : 27,621.91 = 5,269.40 : x
  2. Step 2: Convert to fraction form
    18,420.02/27,621.91 = 5,269.40/x
  3. Step 3: Cross multiply
    18,420.02x = 27,621.91 × 5,269.40
  4. Step 4: Simplify right side
    18,420.02x = 145,550,892.55
  5. Step 5: Solve for x
    x = 145,550,892.55/18,420.02
  6. Step 6: Final answer
    x = 7,901.78

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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.