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Finding the Fourth Proportional to 12,602.34, 17,390.81 and 6,936.57

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Solution

The fourth proportional to 12,602.34, 17,390.81 and 6,936.57 is: 9,572.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,602.34 : 17,390.81 = 6,936.57 : x
  2. Step 2: Convert to fraction form
    12,602.34/17,390.81 = 6,936.57/x
  3. Step 3: Cross multiply
    12,602.34x = 17,390.81 × 6,936.57
  4. Step 4: Simplify right side
    12,602.34x = 120,632,588.26
  5. Step 5: Solve for x
    x = 120,632,588.26/12,602.34
  6. Step 6: Final answer
    x = 9,572.24

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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.