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Finding the Fourth Proportional to 15,951, 22,012.07 and 9,985.96

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Solution

The fourth proportional to 15,951, 22,012.07 and 9,985.96 is: 13,780.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,951 : 22,012.07 = 9,985.96 : x
  2. Step 2: Convert to fraction form
    15,951/22,012.07 = 9,985.96/x
  3. Step 3: Cross multiply
    15,951x = 22,012.07 × 9,985.96
  4. Step 4: Simplify right side
    15,951x = 219,811,650.54
  5. Step 5: Solve for x
    x = 219,811,650.54/15,951
  6. Step 6: Final answer
    x = 13,780.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.