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Finding the Fourth Proportional to 12,748.41, 17,590.79 and 7,368.85

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Solution

The fourth proportional to 12,748.41, 17,590.79 and 7,368.85 is: 10,167.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,748.41 : 17,590.79 = 7,368.85 : x
  2. Step 2: Convert to fraction form
    12,748.41/17,590.79 = 7,368.85/x
  3. Step 3: Cross multiply
    12,748.41x = 17,590.79 × 7,368.85
  4. Step 4: Simplify right side
    12,748.41x = 129,623,812.07
  5. Step 5: Solve for x
    x = 129,623,812.07/12,748.41
  6. Step 6: Final answer
    x = 10,167.84

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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.