Home / 12,630.87-17,428.55-7,324.70

Finding the Fourth Proportional to 12,630.87, 17,428.55 and 7,324.70

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Solution

The fourth proportional to 12,630.87, 17,428.55 and 7,324.70 is: 10,106.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,630.87 : 17,428.55 = 7,324.70 : x
  2. Step 2: Convert to fraction form
    12,630.87/17,428.55 = 7,324.70/x
  3. Step 3: Cross multiply
    12,630.87x = 17,428.55 × 7,324.70
  4. Step 4: Simplify right side
    12,630.87x = 127,658,776.42
  5. Step 5: Solve for x
    x = 127,658,776.42/12,630.87
  6. Step 6: Final answer
    x = 10,106.89

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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.