Home / 13,650.11-20,470.81-5,328.10

Finding the Fourth Proportional to 13,650.11, 20,470.81 and 5,328.10

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Solution

The fourth proportional to 13,650.11, 20,470.81 and 5,328.10 is: 7,990.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,650.11 : 20,470.81 = 5,328.10 : x
  2. Step 2: Convert to fraction form
    13,650.11/20,470.81 = 5,328.10/x
  3. Step 3: Cross multiply
    13,650.11x = 20,470.81 × 5,328.10
  4. Step 4: Simplify right side
    13,650.11x = 109,070,522.76
  5. Step 5: Solve for x
    x = 109,070,522.76/13,650.11
  6. Step 6: Final answer
    x = 7,990.45

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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.