Home / 21,862.94-30,160.60-12,904.34

Finding the Fourth Proportional to 21,862.94, 30,160.60 and 12,904.34

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Solution

The fourth proportional to 21,862.94, 30,160.60 and 12,904.34 is: 17,801.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,862.94 : 30,160.60 = 12,904.34 : x
  2. Step 2: Convert to fraction form
    21,862.94/30,160.60 = 12,904.34/x
  3. Step 3: Cross multiply
    21,862.94x = 30,160.60 × 12,904.34
  4. Step 4: Simplify right side
    21,862.94x = 389,202,637.00
  5. Step 5: Solve for x
    x = 389,202,637.00/21,862.94
  6. Step 6: Final answer
    x = 17,801.94

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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.