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Finding the Fourth Proportional to 15,473.40, 21,353.40 and 8,759.04

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Solution

The fourth proportional to 15,473.40, 21,353.40 and 8,759.04 is: 12,087.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,473.40 : 21,353.40 = 8,759.04 : x
  2. Step 2: Convert to fraction form
    15,473.40/21,353.40 = 8,759.04/x
  3. Step 3: Cross multiply
    15,473.40x = 21,353.40 × 8,759.04
  4. Step 4: Simplify right side
    15,473.40x = 187,035,284.74
  5. Step 5: Solve for x
    x = 187,035,284.74/15,473.40
  6. Step 6: Final answer
    x = 12,087.54

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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.