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Finding the Fourth Proportional to 12,973.29, 17,903.58 and 7,672.65

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Solution

The fourth proportional to 12,973.29, 17,903.58 and 7,672.65 is: 10,588.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,973.29 : 17,903.58 = 7,672.65 : x
  2. Step 2: Convert to fraction form
    12,973.29/17,903.58 = 7,672.65/x
  3. Step 3: Cross multiply
    12,973.29x = 17,903.58 × 7,672.65
  4. Step 4: Simplify right side
    12,973.29x = 137,367,775.21
  5. Step 5: Solve for x
    x = 137,367,775.21/12,973.29
  6. Step 6: Final answer
    x = 10,588.51

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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.