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Finding the Fourth Proportional to 14,700.40, 21,996.60 and 10,812.40

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Solution

The fourth proportional to 14,700.40, 21,996.60 and 10,812.40 is: 16,178.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,700.40 : 21,996.60 = 10,812.40 : x
  2. Step 2: Convert to fraction form
    14,700.40/21,996.60 = 10,812.40/x
  3. Step 3: Cross multiply
    14,700.40x = 21,996.60 × 10,812.40
  4. Step 4: Simplify right side
    14,700.40x = 237,836,037.84
  5. Step 5: Solve for x
    x = 237,836,037.84/14,700.40
  6. Step 6: Final answer
    x = 16,178.88

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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.