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Finding the Fourth Proportional to 15,752.73, 21,739.22 and 9,039.55

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Solution

The fourth proportional to 15,752.73, 21,739.22 and 9,039.55 is: 12,474.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,752.73 : 21,739.22 = 9,039.55 : x
  2. Step 2: Convert to fraction form
    15,752.73/21,739.22 = 9,039.55/x
  3. Step 3: Cross multiply
    15,752.73x = 21,739.22 × 9,039.55
  4. Step 4: Simplify right side
    15,752.73x = 196,512,741.26
  5. Step 5: Solve for x
    x = 196,512,741.26/15,752.73
  6. Step 6: Final answer
    x = 12,474.84

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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.