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Finding the Fourth Proportional to 15,564.84, 21,480.03 and 8,850.30

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Solution

The fourth proportional to 15,564.84, 21,480.03 and 8,850.30 is: 12,213.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,564.84 : 21,480.03 = 8,850.30 : x
  2. Step 2: Convert to fraction form
    15,564.84/21,480.03 = 8,850.30/x
  3. Step 3: Cross multiply
    15,564.84x = 21,480.03 × 8,850.30
  4. Step 4: Simplify right side
    15,564.84x = 190,104,709.51
  5. Step 5: Solve for x
    x = 190,104,709.51/15,564.84
  6. Step 6: Final answer
    x = 12,213.73

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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.