Home / 21,872.26-30,202.77-17,148.34

Finding the Fourth Proportional to 21,872.26, 30,202.77 and 17,148.34

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Solution

The fourth proportional to 21,872.26, 30,202.77 and 17,148.34 is: 23,679.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,872.26 : 30,202.77 = 17,148.34 : x
  2. Step 2: Convert to fraction form
    21,872.26/30,202.77 = 17,148.34/x
  3. Step 3: Cross multiply
    21,872.26x = 30,202.77 × 17,148.34
  4. Step 4: Simplify right side
    21,872.26x = 517,927,368.90
  5. Step 5: Solve for x
    x = 517,927,368.90/21,872.26
  6. Step 6: Final answer
    x = 23,679.65

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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.