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Finding the Fourth Proportional to 12,672.65, 17,490.63 and 7,368.23

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Solution

The fourth proportional to 12,672.65, 17,490.63 and 7,368.23 is: 10,169.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,672.65 : 17,490.63 = 7,368.23 : x
  2. Step 2: Convert to fraction form
    12,672.65/17,490.63 = 7,368.23/x
  3. Step 3: Cross multiply
    12,672.65x = 17,490.63 × 7,368.23
  4. Step 4: Simplify right side
    12,672.65x = 128,874,984.68
  5. Step 5: Solve for x
    x = 128,874,984.68/12,672.65
  6. Step 6: Final answer
    x = 10,169.54

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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.