Home / 21,862.53-30,171.69-12,907.62

Finding the Fourth Proportional to 21,862.53, 30,171.69 and 12,907.62

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Solution

The fourth proportional to 21,862.53, 30,171.69 and 12,907.62 is: 17,813.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,862.53 : 30,171.69 = 12,907.62 : x
  2. Step 2: Convert to fraction form
    21,862.53/30,171.69 = 12,907.62/x
  3. Step 3: Cross multiply
    21,862.53x = 30,171.69 × 12,907.62
  4. Step 4: Simplify right side
    21,862.53x = 389,444,709.28
  5. Step 5: Solve for x
    x = 389,444,709.28/21,862.53
  6. Step 6: Final answer
    x = 17,813.34

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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.