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Finding the Fourth Proportional to 11,368.40, 17,012.04 and 7,859.12

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Solution

The fourth proportional to 11,368.40, 17,012.04 and 7,859.12 is: 11,760.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,368.40 : 17,012.04 = 7,859.12 : x
  2. Step 2: Convert to fraction form
    11,368.40/17,012.04 = 7,859.12/x
  3. Step 3: Cross multiply
    11,368.40x = 17,012.04 × 7,859.12
  4. Step 4: Simplify right side
    11,368.40x = 133,699,663.80
  5. Step 5: Solve for x
    x = 133,699,663.80/11,368.40
  6. Step 6: Final answer
    x = 11,760.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.