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Finding the Fourth Proportional to 18,802.56, 28,203.30 and 7,706.10

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Solution

The fourth proportional to 18,802.56, 28,203.30 and 7,706.10 is: 11,558.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,802.56 : 28,203.30 = 7,706.10 : x
  2. Step 2: Convert to fraction form
    18,802.56/28,203.30 = 7,706.10/x
  3. Step 3: Cross multiply
    18,802.56x = 28,203.30 × 7,706.10
  4. Step 4: Simplify right side
    18,802.56x = 217,337,450.13
  5. Step 5: Solve for x
    x = 217,337,450.13/18,802.56
  6. Step 6: Final answer
    x = 11,558.93

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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.