Home / 21,425.69-29,567.40-11,866.07

Finding the Fourth Proportional to 21,425.69, 29,567.40 and 11,866.07

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Solution

The fourth proportional to 21,425.69, 29,567.40 and 11,866.07 is: 16,375.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,425.69 : 29,567.40 = 11,866.07 : x
  2. Step 2: Convert to fraction form
    21,425.69/29,567.40 = 11,866.07/x
  3. Step 3: Cross multiply
    21,425.69x = 29,567.40 × 11,866.07
  4. Step 4: Simplify right side
    21,425.69x = 350,848,690.28
  5. Step 5: Solve for x
    x = 350,848,690.28/21,425.69
  6. Step 6: Final answer
    x = 16,375.14

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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.