Home / 19,709.11-29,489.55-11,782.45

Finding the Fourth Proportional to 19,709.11, 29,489.55 and 11,782.45

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Solution

The fourth proportional to 19,709.11, 29,489.55 and 11,782.45 is: 17,629.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,709.11 : 29,489.55 = 11,782.45 : x
  2. Step 2: Convert to fraction form
    19,709.11/29,489.55 = 11,782.45/x
  3. Step 3: Cross multiply
    19,709.11x = 29,489.55 × 11,782.45
  4. Step 4: Simplify right side
    19,709.11x = 347,459,148.40
  5. Step 5: Solve for x
    x = 347,459,148.40/19,709.11
  6. Step 6: Final answer
    x = 17,629.37

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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.