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Finding the Fourth Proportional to 12,484.55, 18,704.26 and 7,802.31

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Solution

The fourth proportional to 12,484.55, 18,704.26 and 7,802.31 is: 11,689.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,484.55 : 18,704.26 = 7,802.31 : x
  2. Step 2: Convert to fraction form
    12,484.55/18,704.26 = 7,802.31/x
  3. Step 3: Cross multiply
    12,484.55x = 18,704.26 × 7,802.31
  4. Step 4: Simplify right side
    12,484.55x = 145,936,434.84
  5. Step 5: Solve for x
    x = 145,936,434.84/12,484.55
  6. Step 6: Final answer
    x = 11,689.36

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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.