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Finding the Fourth Proportional to 15,898.88, 21,940.46 and 9,611.25

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Solution

The fourth proportional to 15,898.88, 21,940.46 and 9,611.25 is: 13,263.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,898.88 : 21,940.46 = 9,611.25 : x
  2. Step 2: Convert to fraction form
    15,898.88/21,940.46 = 9,611.25/x
  3. Step 3: Cross multiply
    15,898.88x = 21,940.46 × 9,611.25
  4. Step 4: Simplify right side
    15,898.88x = 210,875,198.12
  5. Step 5: Solve for x
    x = 210,875,198.12/15,898.88
  6. Step 6: Final answer
    x = 13,263.53

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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.