Home / 21,425.49-29,567.25-11,865.65

Finding the Fourth Proportional to 21,425.49, 29,567.25 and 11,865.65

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Solution

The fourth proportional to 21,425.49, 29,567.25 and 11,865.65 is: 16,374.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,425.49 : 29,567.25 = 11,865.65 : x
  2. Step 2: Convert to fraction form
    21,425.49/29,567.25 = 11,865.65/x
  3. Step 3: Cross multiply
    21,425.49x = 29,567.25 × 11,865.65
  4. Step 4: Simplify right side
    21,425.49x = 350,834,492.13
  5. Step 5: Solve for x
    x = 350,834,492.13/21,425.49
  6. Step 6: Final answer
    x = 16,374.63

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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.