Home / 21,862.05-30,168.97-12,302.47

Finding the Fourth Proportional to 21,862.05, 30,168.97 and 12,302.47

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Solution

The fourth proportional to 21,862.05, 30,168.97 and 12,302.47 is: 16,977.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,862.05 : 30,168.97 = 12,302.47 : x
  2. Step 2: Convert to fraction form
    21,862.05/30,168.97 = 12,302.47/x
  3. Step 3: Cross multiply
    21,862.05x = 30,168.97 × 12,302.47
  4. Step 4: Simplify right side
    21,862.05x = 371,152,786.84
  5. Step 5: Solve for x
    x = 371,152,786.84/21,862.05
  6. Step 6: Final answer
    x = 16,977.03

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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.