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Finding the Fourth Proportional to 13,152.80, 19,724.40 and 6,576.80

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Solution

The fourth proportional to 13,152.80, 19,724.40 and 6,576.80 is: 9,862.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,152.80 : 19,724.40 = 6,576.80 : x
  2. Step 2: Convert to fraction form
    13,152.80/19,724.40 = 6,576.80/x
  3. Step 3: Cross multiply
    13,152.80x = 19,724.40 × 6,576.80
  4. Step 4: Simplify right side
    13,152.80x = 129,723,433.92
  5. Step 5: Solve for x
    x = 129,723,433.92/13,152.80
  6. Step 6: Final answer
    x = 9,862.80

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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.