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Finding the Fourth Proportional to 21,695.41, 32,540.70 and 7,652.83

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Solution

The fourth proportional to 21,695.41, 32,540.70 and 7,652.83 is: 11,478.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,695.41 : 32,540.70 = 7,652.83 : x
  2. Step 2: Convert to fraction form
    21,695.41/32,540.70 = 7,652.83/x
  3. Step 3: Cross multiply
    21,695.41x = 32,540.70 × 7,652.83
  4. Step 4: Simplify right side
    21,695.41x = 249,028,453.54
  5. Step 5: Solve for x
    x = 249,028,453.54/21,695.41
  6. Step 6: Final answer
    x = 11,478.39

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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.