Home / 12,510.63-18,771.39-7,841.34

Finding the Fourth Proportional to 12,510.63, 18,771.39 and 7,841.34

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Solution

The fourth proportional to 12,510.63, 18,771.39 and 7,841.34 is: 11,765.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,510.63 : 18,771.39 = 7,841.34 : x
  2. Step 2: Convert to fraction form
    12,510.63/18,771.39 = 7,841.34/x
  3. Step 3: Cross multiply
    12,510.63x = 18,771.39 × 7,841.34
  4. Step 4: Simplify right side
    12,510.63x = 147,192,718.20
  5. Step 5: Solve for x
    x = 147,192,718.20/12,510.63
  6. Step 6: Final answer
    x = 11,765.42

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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.