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Finding the Fourth Proportional to 11,861.16, 17,802.44 and 6,319.12

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Solution

The fourth proportional to 11,861.16, 17,802.44 and 6,319.12 is: 9,484.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,861.16 : 17,802.44 = 6,319.12 : x
  2. Step 2: Convert to fraction form
    11,861.16/17,802.44 = 6,319.12/x
  3. Step 3: Cross multiply
    11,861.16x = 17,802.44 × 6,319.12
  4. Step 4: Simplify right side
    11,861.16x = 112,495,754.65
  5. Step 5: Solve for x
    x = 112,495,754.65/11,861.16
  6. Step 6: Final answer
    x = 9,484.38

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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.