Home / 21,725.43-29,965.65-19,938.69

Finding the Fourth Proportional to 21,725.43, 29,965.65 and 19,938.69

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Solution

The fourth proportional to 21,725.43, 29,965.65 and 19,938.69 is: 27,501.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,725.43 : 29,965.65 = 19,938.69 : x
  2. Step 2: Convert to fraction form
    21,725.43/29,965.65 = 19,938.69/x
  3. Step 3: Cross multiply
    21,725.43x = 29,965.65 × 19,938.69
  4. Step 4: Simplify right side
    21,725.43x = 597,475,806.00
  5. Step 5: Solve for x
    x = 597,475,806.00/21,725.43
  6. Step 6: Final answer
    x = 27,501.22

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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.