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Finding the Fourth Proportional to 15,988.66, 22,063.44 and 8,914.84

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Solution

The fourth proportional to 15,988.66, 22,063.44 and 8,914.84 is: 12,301.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,988.66 : 22,063.44 = 8,914.84 : x
  2. Step 2: Convert to fraction form
    15,988.66/22,063.44 = 8,914.84/x
  3. Step 3: Cross multiply
    15,988.66x = 22,063.44 × 8,914.84
  4. Step 4: Simplify right side
    15,988.66x = 196,692,037.45
  5. Step 5: Solve for x
    x = 196,692,037.45/15,988.66
  6. Step 6: Final answer
    x = 12,301.97

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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.