Home / 9,911.28-14,869.92-4,720.80

Finding the Fourth Proportional to 9,911.28, 14,869.92 and 4,720.80

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Solution

The fourth proportional to 9,911.28, 14,869.92 and 4,720.80 is: 7,082.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,911.28 : 14,869.92 = 4,720.80 : x
  2. Step 2: Convert to fraction form
    9,911.28/14,869.92 = 4,720.80/x
  3. Step 3: Cross multiply
    9,911.28x = 14,869.92 × 4,720.80
  4. Step 4: Simplify right side
    9,911.28x = 70,197,918.34
  5. Step 5: Solve for x
    x = 70,197,918.34/9,911.28
  6. Step 6: Final answer
    x = 7,082.63

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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.