Home / 21,862.34-30,168.77-12,906.58

Finding the Fourth Proportional to 21,862.34, 30,168.77 and 12,906.58

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Solution

The fourth proportional to 21,862.34, 30,168.77 and 12,906.58 is: 17,810.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,862.34 : 30,168.77 = 12,906.58 : x
  2. Step 2: Convert to fraction form
    21,862.34/30,168.77 = 12,906.58/x
  3. Step 3: Cross multiply
    21,862.34x = 30,168.77 × 12,906.58
  4. Step 4: Simplify right side
    21,862.34x = 389,375,643.51
  5. Step 5: Solve for x
    x = 389,375,643.51/21,862.34
  6. Step 6: Final answer
    x = 17,810.34

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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.