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Finding the Fourth Proportional to 13,021.32, 17,971.01 and 7,356.32

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Solution

The fourth proportional to 13,021.32, 17,971.01 and 7,356.32 is: 10,152.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,021.32 : 17,971.01 = 7,356.32 : x
  2. Step 2: Convert to fraction form
    13,021.32/17,971.01 = 7,356.32/x
  3. Step 3: Cross multiply
    13,021.32x = 17,971.01 × 7,356.32
  4. Step 4: Simplify right side
    13,021.32x = 132,200,373.65
  5. Step 5: Solve for x
    x = 132,200,373.65/13,021.32
  6. Step 6: Final answer
    x = 10,152.61

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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.