Home / 18,638.56-25,726.70-11,090.24

Finding the Fourth Proportional to 18,638.56, 25,726.70 and 11,090.24

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Solution

The fourth proportional to 18,638.56, 25,726.70 and 11,090.24 is: 15,307.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,638.56 : 25,726.70 = 11,090.24 : x
  2. Step 2: Convert to fraction form
    18,638.56/25,726.70 = 11,090.24/x
  3. Step 3: Cross multiply
    18,638.56x = 25,726.70 × 11,090.24
  4. Step 4: Simplify right side
    18,638.56x = 285,315,277.41
  5. Step 5: Solve for x
    x = 285,315,277.41/18,638.56
  6. Step 6: Final answer
    x = 15,307.80

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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.