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Finding the Fourth Proportional to 19,964, 29,947.44 and 7,652

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Solution

The fourth proportional to 19,964, 29,947.44 and 7,652 is: 11,478.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,964 : 29,947.44 = 7,652 : x
  2. Step 2: Convert to fraction form
    19,964/29,947.44 = 7,652/x
  3. Step 3: Cross multiply
    19,964x = 29,947.44 × 7,652
  4. Step 4: Simplify right side
    19,964x = 229,157,810.88
  5. Step 5: Solve for x
    x = 229,157,810.88/19,964
  6. Step 6: Final answer
    x = 11,478.55

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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.