Home / 21,423.06-29,563.35-11,862.39

Finding the Fourth Proportional to 21,423.06, 29,563.35 and 11,862.39

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Solution

The fourth proportional to 21,423.06, 29,563.35 and 11,862.39 is: 16,369.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,423.06 : 29,563.35 = 11,862.39 : x
  2. Step 2: Convert to fraction form
    21,423.06/29,563.35 = 11,862.39/x
  3. Step 3: Cross multiply
    21,423.06x = 29,563.35 × 11,862.39
  4. Step 4: Simplify right side
    21,423.06x = 350,691,987.41
  5. Step 5: Solve for x
    x = 350,691,987.41/21,423.06
  6. Step 6: Final answer
    x = 16,369.84

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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.