Home / 12,770.10-19,131.39-6,931.62

Finding the Fourth Proportional to 12,770.10, 19,131.39 and 6,931.62

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Solution

The fourth proportional to 12,770.10, 19,131.39 and 6,931.62 is: 10,384.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,770.10 : 19,131.39 = 6,931.62 : x
  2. Step 2: Convert to fraction form
    12,770.10/19,131.39 = 6,931.62/x
  3. Step 3: Cross multiply
    12,770.10x = 19,131.39 × 6,931.62
  4. Step 4: Simplify right side
    12,770.10x = 132,611,525.55
  5. Step 5: Solve for x
    x = 132,611,525.55/12,770.10
  6. Step 6: Final answer
    x = 10,384.53

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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.