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Finding the Fourth Proportional to 13,277.20, 19,915.80 and 13,082.80

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Solution

The fourth proportional to 13,277.20, 19,915.80 and 13,082.80 is: 19,624.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,277.20 : 19,915.80 = 13,082.80 : x
  2. Step 2: Convert to fraction form
    13,277.20/19,915.80 = 13,082.80/x
  3. Step 3: Cross multiply
    13,277.20x = 19,915.80 × 13,082.80
  4. Step 4: Simplify right side
    13,277.20x = 260,554,428.24
  5. Step 5: Solve for x
    x = 260,554,428.24/13,277.20
  6. Step 6: Final answer
    x = 19,624.20

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1.5x scale

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.