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Finding the Fourth Proportional to 15,175.80, 20,946.60 and 10,700.88

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Solution

The fourth proportional to 15,175.80, 20,946.60 and 10,700.88 is: 14,770.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,175.80 : 20,946.60 = 10,700.88 : x
  2. Step 2: Convert to fraction form
    15,175.80/20,946.60 = 10,700.88/x
  3. Step 3: Cross multiply
    15,175.80x = 20,946.60 × 10,700.88
  4. Step 4: Simplify right side
    15,175.80x = 224,147,053.01
  5. Step 5: Solve for x
    x = 224,147,053.01/15,175.80
  6. Step 6: Final answer
    x = 14,770.03

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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.