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Finding the Fourth Proportional to 15,985.56, 22,060.08 and 8,912.44

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Solution

The fourth proportional to 15,985.56, 22,060.08 and 8,912.44 is: 12,299.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,985.56 : 22,060.08 = 8,912.44 : x
  2. Step 2: Convert to fraction form
    15,985.56/22,060.08 = 8,912.44/x
  3. Step 3: Cross multiply
    15,985.56x = 22,060.08 × 8,912.44
  4. Step 4: Simplify right side
    15,985.56x = 196,609,139.40
  5. Step 5: Solve for x
    x = 196,609,139.40/15,985.56
  6. Step 6: Final answer
    x = 12,299.17

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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.