Home / 20,426.33-28,195.71-15,404.93

Finding the Fourth Proportional to 20,426.33, 28,195.71 and 15,404.93

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Solution

The fourth proportional to 20,426.33, 28,195.71 and 15,404.93 is: 21,264.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.33 : 28,195.71 = 15,404.93 : x
  2. Step 2: Convert to fraction form
    20,426.33/28,195.71 = 15,404.93/x
  3. Step 3: Cross multiply
    20,426.33x = 28,195.71 × 15,404.93
  4. Step 4: Simplify right side
    20,426.33x = 434,352,938.85
  5. Step 5: Solve for x
    x = 434,352,938.85/20,426.33
  6. Step 6: Final answer
    x = 21,264.37

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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.