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Finding the Fourth Proportional to 10,662.30, 16,012.65 and 10,316.70

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Solution

The fourth proportional to 10,662.30, 16,012.65 and 10,316.70 is: 15,493.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,662.30 : 16,012.65 = 10,316.70 : x
  2. Step 2: Convert to fraction form
    10,662.30/16,012.65 = 10,316.70/x
  3. Step 3: Cross multiply
    10,662.30x = 16,012.65 × 10,316.70
  4. Step 4: Simplify right side
    10,662.30x = 165,197,706.26
  5. Step 5: Solve for x
    x = 165,197,706.26/10,662.30
  6. Step 6: Final answer
    x = 15,493.63

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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.