Home / 13,221.09-19,842.57-9,923.58

Finding the Fourth Proportional to 13,221.09, 19,842.57 and 9,923.58

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Solution

The fourth proportional to 13,221.09, 19,842.57 and 9,923.58 is: 14,893.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.09 : 19,842.57 = 9,923.58 : x
  2. Step 2: Convert to fraction form
    13,221.09/19,842.57 = 9,923.58/x
  3. Step 3: Cross multiply
    13,221.09x = 19,842.57 × 9,923.58
  4. Step 4: Simplify right side
    13,221.09x = 196,909,330.80
  5. Step 5: Solve for x
    x = 196,909,330.80/13,221.09
  6. Step 6: Final answer
    x = 14,893.58

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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.