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Finding the Fourth Proportional to 12,849.30, 17,730.90 and 7,260.30

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Solution

The fourth proportional to 12,849.30, 17,730.90 and 7,260.30 is: 10,018.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,849.30 : 17,730.90 = 7,260.30 : x
  2. Step 2: Convert to fraction form
    12,849.30/17,730.90 = 7,260.30/x
  3. Step 3: Cross multiply
    12,849.30x = 17,730.90 × 7,260.30
  4. Step 4: Simplify right side
    12,849.30x = 128,731,653.27
  5. Step 5: Solve for x
    x = 128,731,653.27/12,849.30
  6. Step 6: Final answer
    x = 10,018.57

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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.