Home / 12,762.38-19,143.54-5,270.15

Finding the Fourth Proportional to 12,762.38, 19,143.54 and 5,270.15

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Solution

The fourth proportional to 12,762.38, 19,143.54 and 5,270.15 is: 7,905.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,762.38 : 19,143.54 = 5,270.15 : x
  2. Step 2: Convert to fraction form
    12,762.38/19,143.54 = 5,270.15/x
  3. Step 3: Cross multiply
    12,762.38x = 19,143.54 × 5,270.15
  4. Step 4: Simplify right side
    12,762.38x = 100,889,375.19
  5. Step 5: Solve for x
    x = 100,889,375.19/12,762.38
  6. Step 6: Final answer
    x = 7,905.21

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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.