Home / 19,857.53-29,777.56-9,330.55

Finding the Fourth Proportional to 19,857.53, 29,777.56 and 9,330.55

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Solution

The fourth proportional to 19,857.53, 29,777.56 and 9,330.55 is: 13,991.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,857.53 : 29,777.56 = 9,330.55 : x
  2. Step 2: Convert to fraction form
    19,857.53/29,777.56 = 9,330.55/x
  3. Step 3: Cross multiply
    19,857.53x = 29,777.56 × 9,330.55
  4. Step 4: Simplify right side
    19,857.53x = 277,840,914.69
  5. Step 5: Solve for x
    x = 277,840,914.69/19,857.53
  6. Step 6: Final answer
    x = 13,991.71

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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.