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Finding the Fourth Proportional to 13,007.90, 17,950.94 and 7,039.57

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Solution

The fourth proportional to 13,007.90, 17,950.94 and 7,039.57 is: 9,714.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,007.90 : 17,950.94 = 7,039.57 : x
  2. Step 2: Convert to fraction form
    13,007.90/17,950.94 = 7,039.57/x
  3. Step 3: Cross multiply
    13,007.90x = 17,950.94 × 7,039.57
  4. Step 4: Simplify right side
    13,007.90x = 126,366,871.42
  5. Step 5: Solve for x
    x = 126,366,871.42/13,007.90
  6. Step 6: Final answer
    x = 9,714.63

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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.