Home / 21,425.51-29,567.43-11,865.69

Finding the Fourth Proportional to 21,425.51, 29,567.43 and 11,865.69

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Solution

The fourth proportional to 21,425.51, 29,567.43 and 11,865.69 is: 16,374.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,425.51 : 29,567.43 = 11,865.69 : x
  2. Step 2: Convert to fraction form
    21,425.51/29,567.43 = 11,865.69/x
  3. Step 3: Cross multiply
    21,425.51x = 29,567.43 × 11,865.69
  4. Step 4: Simplify right side
    21,425.51x = 350,837,958.48
  5. Step 5: Solve for x
    x = 350,837,958.48/21,425.51
  6. Step 6: Final answer
    x = 16,374.78

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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.