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Finding the Fourth Proportional to 15,797.38, 21,800.46 and 8,723.80

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Solution

The fourth proportional to 15,797.38, 21,800.46 and 8,723.80 is: 12,038.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,797.38 : 21,800.46 = 8,723.80 : x
  2. Step 2: Convert to fraction form
    15,797.38/21,800.46 = 8,723.80/x
  3. Step 3: Cross multiply
    15,797.38x = 21,800.46 × 8,723.80
  4. Step 4: Simplify right side
    15,797.38x = 190,182,863.84
  5. Step 5: Solve for x
    x = 190,182,863.84/15,797.38
  6. Step 6: Final answer
    x = 12,038.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.