Home / 19,538.88-29,298.48-7,842.40

Finding the Fourth Proportional to 19,538.88, 29,298.48 and 7,842.40

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Solution

The fourth proportional to 19,538.88, 29,298.48 and 7,842.40 is: 11,759.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,538.88 : 29,298.48 = 7,842.40 : x
  2. Step 2: Convert to fraction form
    19,538.88/29,298.48 = 7,842.40/x
  3. Step 3: Cross multiply
    19,538.88x = 29,298.48 × 7,842.40
  4. Step 4: Simplify right side
    19,538.88x = 229,770,399.55
  5. Step 5: Solve for x
    x = 229,770,399.55/19,538.88
  6. Step 6: Final answer
    x = 11,759.65

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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.